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Build log

What we learn while we build the ring and the robot, including what did not work.

• 4 November 2026What is a flying home robot good for?A small flying robot at home can go and look, find you and find things. It cannot carry, clean or babysit. Uses and limits, from the team building one.
• 4 November 2026How our robot chooses where to land.A flying robot at home should land only where it is sure: level, clear around it and away from people. How Alkyon is designed to decide, and what a wall taught us.
• 4 November 2026Rules for a robot at home.What a flying robot at home should and should not do: keep its distance, stop on contact or on two presses, stay indoors and keep its camera at home.
• 4 November 2026Several robots in one home: how they avoid each other.How flying robots sharing a home stay out of each other's way: shared positions, reciprocal collision avoidance, a keep-right rule, and what to do when messages are late.
• 4 November 2026Teaching a robot to see cats, dogs and tulle.We trained a small camera model from scratch to spot people, curtains, cats and dogs. The version that saw people best lost the tulle, so we did not use it.
• 4 November 2026What a fan does to a small drone.Our home drone flew well in still air. Then we added fans, air conditioning and open windows to the simulation: what changed, two fixes, and the one we switched off.
• 4 November 2026What our ring and robot learn, and what they may not.Four things we trained for a ring and a home robot: what each learned, the versions we set aside, a speech model that invented words, and the part that does not learn.
• 4 November 2026When AI leaves the screen.AI has learned to talk. The change people will feel, we think, comes when it lives in the things around them. Why we build a ring and a home robot, and our rules.
• 3 November 2026The AI proposes. Tested code decides.Why the AI model that talks to you cannot fly the robot: the layers between a request and the motors, with the reaction times from our simulation.
• 3 November 2026Why our first ring has no health sensors, yet.Sleep, heart rate and skin temperature come with the second Lychnos Ring. Why we chose conversation and battery first, and why we will not claim blood sugar.
• 2 November 2026Can a ring understand a mumble?What we learned running open speech-recognition models through a simulated ring microphone: six languages, quiet rooms and mumbles, and the tuning that did not carry.
• 1 November 2026A dock that swaps the battery.Small drones fly for minutes, not hours. Our concept for a dock that centres Alkyon when it lands and swaps its battery pack with one small arm.
• 1 November 2026Propeller guards a finger cannot pass.Why our first propeller guards were not guards, and the design that passed our own push and finger tests in the model: a carbon hoop with grilles.
• 31 October 2026Through a narrow door.Folding its arms is the easy part. What our simulation says about passing a tight gap in still air and in drafts, including the hard cases.

Guides

Plain answers to what people ask about AI rings, AI assistants and using the phone less. The research on phones, by topic: phone habits. Every ring guide by question: smart rings.

• 5 November 2026The 30-day phone challenge.A 30-day plan to use your phone less without quitting it: one small change a day, four themes, a weekly check, and the evidence behind each step in our guides.
• 5 November 2026A phone-light December.24 small steps from 1 December to Christmas Eve to put the phone down a little more: for you, for the family and for the holidays, each with a guide behind it.
• 5 November 2026The future of payments in Europe.Cards are turning into tokens and transfers into seconds. What the EU’s instant payment rules changed, what Wero does today, and when a digital euro could arrive.
• 5 November 2026Phones in meetings.Most professionals mind phones in meetings: in one survey, 87% said taking a call is rarely, if ever, acceptable. What gets noticed, what is fine, how to stay reachable.
• 5 November 2026Why voice assistants struggle in noise.A quiet kitchen, a busy café, a dinner party: why speech recognition gets harder with noise, distance and voices talking at once, what research measured, and what helps.
• 5 November 2026When voice assistants do not understand you.Voice assistants often cut off people who stutter or mishear atypical speech. What research found, what Apple, Google and a university project are doing, and what helps.
• 4 November 2026The 20-20-20 rule for your eyes: does it work?Every 20 minutes, look 20 feet away for 20 seconds. One trial found reminders eased eye-strain symptoms; another found short breaks did not help. What else to do.
• 4 November 2026AI agent, chatbot, assistant: what is the difference?A chatbot answers, an assistant helps with your own things, an agent takes steps on its own. The difference in plain words, with examples, risks and questions to ask.
• 4 November 2026Your data rights with an AI assistant in the EU.What the GDPR lets you ask of any AI or voice assistant in Europe: a copy of your data, deletion, a download and an objection, with a request you can copy and send.
• 4 November 2026AI assistant memory: what it should remember, and how to control it.AI assistants now remember people, plans and preferences between conversations. What that memory is for, what can go wrong, your rights over it, and what to look for.
• 4 November 2026Can an AI companion ease loneliness?Studies of AI companions found relief from loneliness in the moment, and worse outcomes for the heaviest users over weeks. What it means for an AI you talk to daily.
• 4 November 2026An AI assistant that asks before it acts.Why an AI assistant should ask before it sends, moves, pays or deletes anything, what should need your yes, and how Lychnos Ring asks with one press.
• 4 November 2026The Anxious Generation: what the evidence says.Jonathan Haidt blames smartphones for a rise in teen anxiety; many researchers find the evidence weaker. The argument, the critique, and what parents can take away.
• 4 November 2026Are smart rings accurate for sleep?Smart rings estimate sleep from movement, pulse and temperature. What independent studies against sleep labs found, what rings get right, and what they miss.
• 4 November 2026Blue light glasses and night mode: do they work?A Cochrane review found blue-light glasses may not ease eye strain; a trial found night mode did not improve sleep. What the evidence says, and what helps more.
• 4 November 2026Does a phone on the desk make you less sharp?A famous 2017 study said your phone's mere presence drains your brain. What it found, what later studies and two meta-analyses showed, and what it means for your desk.
• 4 November 2026Brain rot: the word, and what the research says.Brain rot was Oxford's Word of the Year 2024. Where the word comes from, what studies of short videos and attention found, what they cannot show, and what helps.
• 4 November 2026Calm technology: a device that waits at the edge of your attention.What calm technology means, from Mark Weiser and John Seely Brown at Xerox PARC in 1995 to Amber Case's principles, and how we use it in Lychnos Ring's design.
• 4 November 2026Can a smart ring replace a blood test?A ring reads light, motion and temperature through your skin, not your blood. What that tells you, the FDA’s warning on needle-free glucose, and what changed in 2026.
• 4 November 2026Can a smart ring track your health in real time?What a ring measures all day, what it saves for the night, and what the FDA’s 2026 wellness rules let a wearable show or tell you without being a medical device.
• 4 November 2026How to check and limit your screen time.Your phone already counts your screen time, how often you pick it up and how many notifications arrive. Where to find it on iPhone and Android, and the limits that help.
• 4 November 2026How to cut phone notifications.Fewer buzzes without missing the ones you need: switch apps off, batch the rest into a summary, calm a sudden flood. The settings on iPhone and Android, step by step.
• 4 November 2026Digital eye strain: why screens tire your eyes.Why long screen time leaves eyes dry and tired (people blink far less at screens), whether screens damage eyes, and simple habits that help. Not medical advice.
• 4 November 2026Silence your phone, but let family through.Do Not Disturb can still let the school, a partner or a parent through. Where the settings are on iPhone and Android, how repeat calls work, and how to test it.
• 4 November 2026Does a digital detox work?What randomised trials and meta-analyses find about quitting or cutting down social media: small gains from cutting down, no clear effect from quitting, and why.
• 4 November 2026Doomscrolling: what it is, and how to stop.Doomscrolling is the habit of scrolling through bad news you cannot stop reading. What studies link it to, what they cannot prove, and simple ways to break the loop.
• 4 November 2026Dopamine detox: what it is, and what it really does.A dopamine detox does not lower your dopamine. What its creator meant, why Harvard Health Publishing calls the extreme versions a fad, and how to take a useful break.
• 4 November 2026How loud is a drone at home?Drone noise annoys more than traffic at the same level, a review found, because of its whine and hiss. Why small drones sound that way, and what designers can do.
• 4 November 2026At home, or in the cloud?Some AI runs on your phone or a box at home, some in a data centre. What each is good at, how Apple and Google split the work, and what it means for your privacy.
• 4 November 2026The EU AI Act and AI assistants: what applies, and when.What Europe's AI Act means for chatbots and AI assistants: the timeline, the duty to say you are an AI, the banned practices, and what the 2026 omnibus changed.
• 4 November 2026An evening without your phone.A simple evening routine without the phone: a cut-off time, a charging spot outside the bedroom, what to do instead, and how to keep the few things you need.
• 4 November 2026What age for a first phone? Official advice across Europe.No European country sets a legal age for a child's first phone, but health and education bodies advise: mostly no own smartphone before 13. Country by country.
• 4 November 2026Flying a drone indoors.Indoors a drone has no GPS, little room and moving air. What goes wrong, how to fly a small drone at home with care, what the rules say, and how we design Alkyon.
• 4 November 2026FOMO: the fear of missing out.Fear of missing out, measured by researchers since 2013, goes with heavier phone use, phubbing and poorer sleep in meta-analyses. What it means, and how to ease it.
• 4 November 2026Gifts for someone who is always on their phone.Thoughtful gifts for someone who wants to use their phone less: things that take over the phone's small jobs, and things that make an evening without it easy.
• 4 November 2026Why glass and mirrors confuse robots.Robot vacuums and indoor drones meet the same problem: light-based sensors look through glass, into mirrors and past dark floors. Why, what research does, what helps.
• 4 November 2026Grayscale phone: does a black-and-white screen cut screen time?What a 2026 trial found when students switched their phones to grayscale (28 minutes less a day, on average), its limits, and how to turn grayscale on.
• 4 November 2026How a ring can answer with a buzz.Haptics is information you feel. The two motors behind most buzzes, why some feel crisp and others smeared, why patterns beat one vibration, and how a ring can answer.
• 4 November 2026Buying a home drone or robot: twelve things to check.Before a flying robot lives in your home: guards, distance from people, a stop you can reach, where its camera images go, the battery, updates and the EU marks.
• 4 November 2026Home drones and the law in Europe.Do Europe's drone rules apply inside your home? What EU law says about indoor drones, home cameras and the GDPR household exemption, and which product rules still apply.
• 4 November 2026A robot with a camera, at home.Robot vacuum photos have leaked and robots have been hijacked through their cameras. What happened, what EU law requires, and what to ask before a robot moves in.
• 4 November 2026How a drone finds its way indoors.Satellites do not help inside a home. How an indoor drone knows where it is and where it may fly: motion sensors, optical flow, distance sensors, a map and drift.
• 4 November 2026How much screen time is too much for adults?There is no official daily limit for adults. What the WHO says about sitting, what TV studies link to long hours, and questions that tell you more than a daily total.
• 4 November 2026How much sleep do adults need?Seven hours or more a night for adults up to 60, say US sleep scientists and the CDC. Where the number comes from, what changes with age, and when to see a doctor.
• 4 November 2026How to choose a smart ring.What to check before you buy a smart ring: what it is for, the fit, battery, plan, whether it needs your phone, materials, water rating and your rights in the EU.
• 4 November 2026Why ideas come on walks.A Stanford study found walking raised creative thinking for most people, outdoors most of all. Why an unwritten idea nags at you, and how to save it in a few words.
• 4 November 2026Infinite scroll: the design behind feeds with no end.Who designed infinite scroll, why a feed without an end is hard to leave, what the EU and the UK plan for young people, and how to put stopping points back.
• 4 November 2026IP68 or 5 ATM: what water ratings mean.What IP67, IP68 and 5 ATM mean, why an IP68 phone and a 5 ATM watch are rated for different things, and what to check before you shower or swim with a wearable.
• 4 November 2026Is boredom good for you?People would rather do almost anything than sit with their thoughts, one study found; another found boredom made people more creative. What that means for the phone.
• 4 November 2026Is my phone listening to me?An ad that follows a conversation feels like proof. What a study of 17,260 apps found, what the FTC said in 2026 about a firm that claimed to listen, and how to check.
• 4 November 2026Is your phone bad for you? What the research says.Phones and sleep, focus, eyes, neck, driving and young people: what studies and the WHO say, what they do not show, and what helps. No scare stories.
• 4 November 2026Is multitasking a myth?Switching between tasks costs time, more so for complex ones. What studies found about heavy media multitaskers, why the evidence is mixed, and how to switch less.
• 4 November 2026Does nature restore your attention?A walk in nature improved attention in a classic 2008 study; two reviews found smaller, mixed effects. What nature does for focus, and how to get more from a walk.
• 4 November 2026Nomophobia: the fear of being without your phone.Nomophobia is the unease of being without your phone. What the word means, how researchers measure it, how common it is in studies, and what helps. Not a diagnosis.
• 4 November 2026What is a normal resting heart rate?For most adults, a resting heart rate of 60 to 100 beats a minute is normal. What changes it, when lower or higher can be fine, when to see a doctor, what a ring shows.
• 4 November 2026Notifications and focus: what one buzz costs.An experiment found that receiving a phone notification disrupts attention about as much as using the phone. What that means, and how to let through only what matters.
• 4 November 2026Orthosomnia: when a sleep tracker keeps you awake.Named by sleep researchers in 2017: worry about perfecting your tracker’s sleep data until sleep gets worse. What three cases showed, and how to use a tracker calmly.
• 4 November 2026Paying with a ring: how it works.How a payment ring works (a chip, an antenna and a token instead of your card number), the EU's contactless limits, what to check, and Lychnos Ring's plan.
• 4 November 2026Cats, dogs and a robot in the house.We found no study of pets and indoor drones. What research on dogs, noise, robots and wild animals suggests, and how we design Alkyon for a home with a cat or a dog.
• 4 November 2026Phantom vibrations: the buzz that is not there.Most phone users have felt a buzz in their pocket that was not there. What studies found about phantom vibrations, who gets them most, and the simple fixes that helped.
• 4 November 2026How to set up bedtime mode on your phone.Your phone can quiet itself before bed: a wind-down time, fewer notifications, a grey screen. Where to find Sleep Focus on iPhone and Bedtime mode on Android.
• 4 November 2026Your phone before bed: what it does to sleep.What a sleep-lab study found about reading on a screen before bed, what WHO Europe links to late-night social media, and simple ways to keep the phone out of bed.
• 4 November 2026Phone myths: eight claims about screens, checked.Goldfish attention spans, brain drain, blue-light glasses, dopamine detox and more: eight popular claims about phones and screens, and what the evidence says.
• 4 November 2026A phone on the table: does it change a conversation?In experiments, a phone in view during a talk went with less closeness and empathy; a later study found no effect unless people noticed it. What it means at the table.
• 4 November 2026Phones in schools in Europe, country by country.Which European countries ban phones in school, for which ages, by law or by guidance, and since when, with what the evidence says about bans so far. November 2026.
• 4 November 2026Phubbing: what it is, and how to stop.Phubbing means ignoring the person you are with for your phone. What recent surveys link it to in relationships, what they cannot prove, and simple ways to stop.
• 4 November 2026Pre-ordering tech: deposits, refunds and your rightsPre-orders, refundable deposits and crowdfunding pledges are not the same. What EU and US rules say about refunds and delays, and what to check before you pay.
• 4 November 2026Prompt injection: how an AI agent can be tricked by what it reads.An email, a web page or a file can carry instructions meant for your AI assistant. What prompt injection is, why it matters more for agents, and how to limit the damage.
• 4 November 2026Does quitting social media make you happier?Four experiments where people cut back on or quit social media: less loneliness, slightly better mood and body image, but also lower life satisfaction. What it means.
• 4 November 2026Reading on paper vs screens: which do you understand better?Two meta-analyses found people understand informational texts a little better on paper than on screens, more so under time pressure. For stories, no clear difference.
• 4 November 2026Reminders that reach you.Why phone reminders get missed, how to set ones that work (said the moment you think of them, tied to when you can act), and where a buzz on your finger helps.
• 4 November 2026Revenge bedtime procrastination: why you stay up on your phone.Going to bed later than you meant to, for no reason but the phone. What researchers call bedtime procrastination, what a Belgian study found, and how to stop.
• 4 November 2026Screen time for young children: what the WHO recommends.The WHO's screen time guidance for children under five, what WHO Europe found about teenagers and social media, and practical ideas for families.
• 4 November 2026Phones and screens in Europe: the numbers.The numbers on phones and screens in Europe from official sources: daily internet use, smartphones, social media, teens' screen time and what Europeans want. 2026.
• 4 November 2026Problematic phone use: the signs, and what to do.The signs researchers use for problematic social media and phone use (losing control, feeling bad without it, neglecting other things) and what to try. Not a diagnosis.
• 4 November 2026Titanium, ceramic or resin: what a smart ring is made of.What smart rings are made of and why it matters: titanium, ceramic and resin compared on weight, scratches, radio signals and feel, and why Lychnos Ring has no metal.
• 4 November 2026Smart ring or smartwatch?Smart ring or smartwatch? The makers’ own battery ratings, what a sleep study found, GPS, screens and comfort at night, and where a ring you talk to fits between them.
• 4 November 2026Social media age limits in Europe, country by country.Which European countries limit social media for children, what is law and what is only proposed, the EU's KIDS Act and how age checks would work. November 2026.
• 4 November 2026Speaking vs typing: how much faster is your voice?A Stanford study found speech about three times faster than a phone keyboard for short messages. What it measured, where typing still wins, and when voice is better.
• 4 November 2026Talking to an AI in public, without the awkwardness.Why talking to a voice assistant in public feels awkward, simple ways around it, and how a hold-to-talk ring with answers at your ear keeps it quiet.
• 4 November 2026Text neck: is looking down at your phone bad for your neck?What a study of 150 young adults found about texting posture and neck pain, why it challenges a popular belief, and what helps a stiff neck. Not medical advice.
• 4 November 2026How to turn off “Hey Siri” and “Hey Google”.A wake word means a microphone that listens for it all the time. How to switch it off on an iPhone and on Google Assistant devices, and keep the assistant one press away.
• 4 November 2026Why voice assistants mishear accents, and what helps.Speech recognition makes more errors for some voices: a US study found nearly double the error rate. Why accent, age and dialect matter, and what helps users and makers.
• 4 November 2026What is an AI ring?AI rings come in three kinds: health rings, voice rings and assistant rings. How each works from button to answer, what costs battery and privacy, and what to check.
• 4 November 2026What is an eSIM?An eSIM is a SIM built into the device and set up by download. How it works, how iPhones and Apple Watches use it, why small devices need it, and how a ring can use one.
• 4 November 2026What is an FCC ID?Gadgets with a radio need FCC authorization before they are sold in the US. What the FCC ID on the label means, how devices get it, and what may be sold before.
• 4 November 2026What does CE marking mean?The CE mark is a maker’s declaration that a product meets EU rules. What it means and does not mean, who checks, and why our devices are not CE marked yet.
• 4 November 2026What is heart rate variability?HRV is the small variation in time between heartbeats. What it reflects, why your number is your own, how rings measure it at night, and what it cannot tell you.
• 4 November 2026Why you keep checking your phone.Much of phone use is short checks: a look at mail, news or messages that lasts under 30 seconds. What researchers found about checking habits, and how to break them.
• 3 November 2026A ring that talks back.Can a ring talk? How Lychnos Ring is designed to answer by voice: a tiny speaker you raise to your ear, or your earbuds, with a buzz and a line on its screen.
• 3 November 2026Letting AI handle your email.An AI assistant can sort mail, sum up threads and draft replies. What to let it do, what to keep for yourself, and what to check before you connect your inbox.
• 3 November 2026A ring as the remote for a home robot.How Lychnos Ring and Alkyon are designed to work together: ask the robot to come to a room, ask what it sees, and stop it with two presses. A concept, in development.
• 3 November 2026Switching to a dumbphone: what you lose, and how to cope.Thinking of a dumbphone? What a basic phone cannot do (messaging apps, maps, banking, sign-in codes), how people work around it, and where an AI ring fits.
• 3 November 2026Drones that change shape in flight.A drone that folds its arms in flight can pass a gap narrower than its open shape. How shape-changing drones work, what makes them hard, and the research behind them.
• 3 November 2026Always listening? Hold to talk versus wake words.How voice assistants listen: wake words, false starts and what leaves the device, and why Lychnos Ring powers its microphone only while you hold a button.
• 3 November 2026How to use your phone less, without missing what matters.Practical ways to use your phone less: notifications, focus hours, a place for the phone, set times for mail, and devices that take the small things off it.
• 3 November 2026Is an AI ring worth it?Is an AI ring worth it? What it does well, what it cannot do, what it costs, and who should buy something else.
• 3 November 2026How to leave your phone at home.A practical checklist for going out without your phone: payments, keys, tickets, sign-in codes, emergencies and email, and what a watch or an AI ring can cover.
• 3 November 2026A morning without the scroll.A morning without the scroll: where to charge the phone, what to do first, and how to get the day’s plan in a minute, without opening a single app.
• 3 November 2026Recording conversations with an AI wearable: what to know in Europe.AI pendants and rings that record: how they listen, when recording other people needs their consent in Europe, and what to ask before you wear one. Not legal advice.
• 3 November 2026Smart ring battery life: how long they last, and why.How long smart rings last on a charge, from health rings to rings you talk to: the makers' figures with sources, what drains a ring, and Lychnos Ring's target.
• 3 November 2026How to find your ring size at home.Measure your ring size at home with a strip of paper or a ring that fits: US, EU and UK sizes in millimetres, and why smart rings fit differently from jewellery.
• 3 November 2026A smart ring with a screen.What a see-through 72 × 40 screen on a ring can show: the time, the next meeting, the first line of an answer, a yes or a no. And why it stays dark until you look.
• 3 November 2026What is an AI agent?An AI agent does things for you, not just answers: it sends, books, moves and buys. What that means, where it goes wrong, and the rules a personal agent should keep.
• 3 November 2026What is LTE-M, and why would a ring use it?LTE-M is a mobile network for small, battery-powered devices. What it is, how it differs from your phone's 4G, its limits, and why Lychnos Ring uses it.
• 3 November 2026Why does an AI ring need a plan?Smart ring subscriptions explained: why Lychnos Ring needs a plan, what it pays for (mobile data, speech, the assistant), what it costs and what to ask of any plan.

Technology

How the technology around AI rings and home robots works, in plain words, with sources. By topic: technology explained.

• 4 November 2026Why batteries wear outLithium-ion batteries age with use and with time. What speeds that up (heat, staying full, running flat) and the habits that help, from phones to smart rings.
• 4 November 2026How do robots recognise people?Object detection finds and labels things in a picture: how it works, how it is trained and measured, why it misses, and what it means for a camera in your home.
• 4 November 2026How does a drone hover?Four propellers, two spinning each way: how a quadcopter hovers, turns and moves without wings or a tail, why it needs a computer, and why small ones fly briefly.
• 4 November 2026How does speech recognition work?How your voice becomes text: sound, a picture of frequencies, neural networks trained on vast amounts of speech, the word error rate, and why noise still matters.
• 4 November 2026How does tap to pay work?Tap a card, phone, watch or ring at the till: what happens in that moment. NFC at 13.56 MHz, payment tokens instead of your card number, and the EU's contactless limits.
• 4 November 2026How do AI voices work?Text-to-speech turns written words into a voice: from robotic early systems to neural voices rated close to recordings, how it works, and what to watch for.
• 4 November 2026Sim-to-real: why robots are tested in simulation firstRobots are trained and tested in simulation before they move for real. Why, what the reality gap is, how randomising the simulation helps, and what it cannot do.
• 4 November 2026What is a time-of-flight sensor?Time-of-flight sensors time light to measure distance: direct and indirect ToF, multi-zone sensors, why glass and dark surfaces fool them, and where they are used.
• 4 November 2026What is a Kalman filter?A Kalman filter combines noisy sensors into one better estimate: how predict-and-correct works, how NASA engineers made it practical, and where it runs today.
• 4 November 2026What is a large language model?Large language models write by predicting text one piece at a time. How they are built and trained, why they can sound sure when wrong, and what that means for you.
• 4 November 2026What is an NPU?An NPU is the part of a chip built for neural networks. What it does, what TOPS figures do and do not tell you, and why running AI on the device matters for privacy.
• 4 November 2026What is Bluetooth LE Audio?LE Audio is the newer way Bluetooth carries sound: the LC3 codec, support for hearing aids and Auracast broadcasts. What it changes for earbuds and small wearables.
• 4 November 2026What is optical flow?Optical flow is the way the picture moves across a camera. How drones and robots measure their own speed with it, why bees do the same, and where it fails.
• 4 November 2026What is RAG?RAG lets an AI look things up before it answers: how retrieval-augmented generation works, why it helps with facts and sources, and where it still goes wrong.
• 4 November 2026What is reinforcement learning?Reinforcement learning teaches machines through rewards: how it works, how it mastered Atari games and Go, why robots learn it in simulation, and its limits.
• 4 November 2026What is SLAM?SLAM lets a robot vacuum or a drone build a map while working out where it is on it: how it works, why drift is the enemy, and what a map of your home reveals.

Comparisons

How Lychnos Ring compares with other rings and AI devices, with sources and dates.

• 4 November 2026Lychnos Ring vs Spark Ring.Spark Ring captures ideas as notes, reminders and drafts in its phone app; Lychnos Ring answers you on the ring over its own eSIM. How the two compare, with sources.
• 4 November 2026Looking for a Nirva alternative?Nirva listens passively to its wearer's voice and turns it into insights in an app; Lychnos Ring listens only while you hold its button and answers on the ring.
• 3 November 2026AI ring or AI glasses?Meta Ray-Ban Display puts a screen in your glasses and needs the Meta AI app; Lychnos Ring puts an assistant on your finger with its own eSIM. How to choose.
• 3 November 2026AI wearables in 2026.The AI wearables you can read about in November 2026: rings, pendants, clips, handhelds and glasses, with prices, plans, whether they need a phone, and sources.
• 3 November 2026Which AI wearables can you buy in Europe?Many AI wearables ship only to the US. Which rings, pendants and glasses reach Europe in November 2026, which do not, and what to check before you order one from abroad.
• 3 November 2026Looking for a Friend pendant alternative?Friend is an AI pendant that is always listening while connected and talks back; Lychnos Ring listens only while you hold its button. How the two compare, with sources.
• 3 November 2026Indoor drones and home robots in 2026.Ring Always Home Cam, Amazon Astro, Samsung Ballie and more: which home robots and indoor drones have reached people by late 2026, with sources, and where Alkyon fits.
• 3 November 2026Looking for a Humane AI Pin alternative?The Humane AI Pin was shut down in February 2025. What happened, what to look for in an AI wearable now, and how Lychnos Ring takes a different path.
• 3 November 2026Looking for a Limitless Pendant alternative?Limitless stopped selling its pendant in December 2025 after Meta bought the company. What that means for owners, and what to look for in an AI wearable now.
• 3 November 2026Lychnos Ring vs Bee by Amazon.Bee by Amazon listens when you switch it on and sums up your day in its apps or Alexa+; Lychnos Ring answers you on the ring, over its own eSIM. How they compare.
• 3 November 2026Lychnos Ring vs Samsung Galaxy Ring.Samsung Galaxy Ring is a health ring for Android phones with no subscription at launch; Lychnos Ring is an AI ring you talk to, with its own eSIM. How they compare.
• 3 November 2026Lychnos Ring vs Natura Interface.Natura Interface reaches the AI agents you choose through your phone and tracks health; Lychnos Ring answers on the ring over its own eSIM and asks before it acts.
• 3 November 2026Lychnos Ring vs Oura Ring 5.Lychnos Ring and Oura Ring 5 do different jobs: one is an AI ring you talk to, the other a health ring. How they compare on price, plan, phone and features.
• 3 November 2026Lychnos Ring vs Pebble Index 01.Pebble Index 01 is a simple ring for voice notes, turned into text on your phone, with no plan. Lychnos Ring is an assistant ring with its own eSIM, screen and speaker.
• 3 November 2026Lychnos Ring vs Plaud NotePin.Plaud NotePin records and transcribes conversations for its apps; Lychnos Ring answers you on the ring and asks before it acts. How the two compare, with sources.
• 3 November 2026Lychnos Ring vs Rabbit R1.Rabbit R1 is a pocket AI device with a screen and its own mobile connection; Lychnos Ring puts the idea on your finger, with a buzz, a line of text and a voice.
• 3 November 2026Lychnos Ring vs Sandbar Stream.Two rings you talk to: Sandbar Stream works with its iPhone app and answers through earbuds; Lychnos Ring answers on the ring, over its own eSIM.
• 3 November 2026Lychnos Ring vs Vocci Ring.Vocci Ring records and passes your notes to the AI assistants you already use, through its phone app; Lychnos Ring answers on the ring over its own eSIM.