andrewla 15 hours ago

Is anybody making smart glasses that are just a display? For me, the rest of the feature set verges on being anti-features. I'd much rather a very rudimentary display that my phone or another device could send relatively low bandwidth data to over bluetooth or some other protocol and build from there.

Having a camera or a mic on the glasses themselves seems like something I'd mostly want to avoid for privacy, and having a speaker just seems like gilding the lily when we already have a variety of headphones to choose from.

  • floren 14 hours ago

    Not to toot my own horn, but I've been fiddling with a now-discontinued, very cheap pair of display smart glasses: https://news.ycombinator.com/item?id=45087803

    You can send low-resolution images to them via Bluetooth. I just figured out how to read button presses. There are speakers and a mic, but I haven't figured out how to use them yet (they don't show up as regular audio devices on Linux).

    You'd need to write custom stuff to generate the images, but with a little imagemagick scripting I've had some pretty usable results.

  • renegat0x0 2 hours ago

    To be honest most of my apps are web pages now. Even on my phone I do not use any more than the default apps. For what is missing I have written my own self-hosted pages.

    I sometimes wonder why people "synchronize" anything, since everything is in my self-hosted instance.

  • queSide 14 hours ago

    I think most of Xreal's offerings are just a display you plug into a phone or laptop.

  • hnlmorg an hour ago

    Loads. I’ve got a pair of Xreal glasses and use it regularly.

  • caydenpiercehax 4 hours ago

    Most people pursuing this include display + microphone.

    The microphone lets you pick up voice, which is critical. Captions, translation, note-taking, etc. all benefit from this.

    Even Realities G1 is this. Mentra is releasing a pair in first half of 2026 like this. Display + microphone.

  • numpad0 12 hours ago

    Note that Solos smart glass from one of other comments might be on eBay for $49 each, but they used to be $499 new. Even Realities G1 is $599. Vufine was way cheaper at $199, but it was wired only and it came with no software whatsoever.

    Smart glasses inevitably cost in those ranges because the exotic displays used on them are costly to make and/or operate. Inkjet OLED on silicon or reflexive monochrome LCD with RGB sequential front lighting combined with a prism system or things of that nature.

    IOW, those excessive feature sets isn't drawn from product concepts or user stories, they're drawn backwards from cumulative parts and engineering costs to justify MSRP. Same reasons as why almost all EVs are marketed as premium products, they can't make them cheaply so they're adding extra glitters in paint to justify price tags.

    If anyone could make displays smaller than a pinky fingernail at $5 that can be driven with an Arduino... then there would be lots of smart glasses that are just Bluetooth picture frames.

  • skhameneh 15 hours ago

    Not quite "smart glasses", but if you want "glasses that are just a display", the Lenovo Legion Glasses are pretty good and they look like normal aviators at first glance.

    I have a pair and I've been experimenting a bit.

    For iOS you can mirror display or use Stage Manager. For Android, at least with Samsung, DEX is pretty decent.

    For audio, they're decent too, I like the convenience and comfort. The audio has good fidelity, but depth is mediocre (better than phone speakers though).

    FWIW I say DEX is decent, having much of the same gripes as I do with Stage Manager. Dual screen, resizing windows, and full screen support is still a mixed bag on all mobile devices. It can be very frustrating at times. Application support on iOS and Android is about the same, which is disappointing. Supposedly iOS 26 fixes some of this, but I haven't tried the beta.

  • arbayi 15 hours ago

    https://store.vufine.com/ I think vufine might be what you are looking for, I don't know much about them as well, also found it here on Hacker News.

    • alchemist1e9 12 hours ago

      It’s wired and very finicky. Basically a 10 year old solution to this problem. I have on in my collection. It’s cool but not really useful or in same tier as the other products being mentioned.’

  • unaut 12 hours ago

    Yeah, same here—just give me a clean display and Bluetooth. No cameras, mics, or speakers needed!

  • senectus1 7 hours ago

    THIS!

    ever since reading the opening chapter of Charles Stross' Accelerando, this is what I've wanted.. an always present live information feed available on tap at any time.

  • circuit10 11 hours ago

    It would be difficult to do head tracking without a camera and having it fixed in your view would limit what you could do with it and be distracting I think (depends on the use case/person though)

  • tonyhart7 9 hours ago

    "Is anybody making smart glasses that are just a display?"

    it is called smart glasses when its just "glasses" ???

  • HeatrayEnjoyer 14 hours ago

    Glasses with a camera should be legislated away with specific narrow exceptions for e.g. safety in certain industrial tasks.

    • com2kid 8 hours ago

      Because smart glasses, that flash a light and make a loud noise when taking a picture, are more invasive than phones literally everywhere? Or street billboards with built in cameras?

      Or how about dash cams in cars? CCTV cameras on ATMs as you walk down the street?

    • skhameneh 14 hours ago

      Reframe this to accommodate for the prevalence and general expectations of where cameras exist.

      Many people walk around with a mobile device out, essentially carrying a device with (increasingly) close to a 360 camera view. Cameras are ubiquitous and targeting one niche device is a waste of time and effort.

      • esseph 14 hours ago

        Sounds like a lobbyist pitch from Big Camera Glasses

cco 14 hours ago

Here's the deal, you don't need any of this.

I have Rayban Metas and the hardware is great...but the software borders on being unhelpful. If they merely served a dumb camera and bluetooth headset to my phone they'd be an unbelievably good product.

Meta won't do this because they want to capture _everything_ going on, but I don't want to chat with Meta's AI, it is very bad, I want to chat with Gemini or ChatGPT and I can do so with their glasses but I must initiate that on my phone (Meta won't give you wakewords for OpenAI/Google of course).

So my suggestion here would be don't? There is no need for an app store or anything like that, just the thinest software layer you need to make the sunglass hardware work as a dumb bluetooth headset and remote camera for the user's phone.

  • caydenpiercehax 4 hours ago

    That sounds nice but there's problems in reality.

    How do the glasses serve as a "dumb camera to your phone"? What protocol do they use to do this? It doesn't exist. It's something that must be solved at the OS layer.

    What if you want to use multiple apps? Are you going to spend 2 minutes each time disconnecting Bluetooth from one phone app, connecting to another, and then using it? No, you need to runtime that lets multiple apps access the sensors as needed.

    Do you want to make an app that accesses the microphone? If you want to have translation app running at the same time that you're taking notes, then again you need some way to allow multiple apps to run at once.

    MentraOS solves those problems.

    • hnlmorg an hour ago

      > How do the glasses serve as a "dumb camera to your phone"? What protocol do they use to do this? It doesn't exist. It's something that must be solved at the OS layer.

      USB webcams have been a thing for years ;)

      I have a pair of Xreal glasses and, while they don’t have a camera, they do have the other components. They are entirely dumb. You plug the USB cable into your phone/laptop/portable gaming device and that’s literally it.

      The cable runs discreetly from the back of the ear and has the additional benefit that you don’t need a heavy battery built into the frame of the glasses.

      So you definitely can have a XR glasses that are “dumb”.

    • numpad0 2 hours ago

      (obex or opp or ftp, if you don't care about live previews. Nokia S60 could just do it, so could Windows Mobile 6.x and under. iOS/most Android, nope)

  • verdverm 11 hours ago

    META wants to be the Android of smart glasses because they know it will be the next dominate form factor when we have desirable devices (also why they are starting with less hardware but a form factor people feel comfortable wearing in public)

    Android XR is coming out with Moohan next month, if Visor ever comes out, it is believed that will eventually by on AXR. Apple still seems hobbled since Jobs left

    • vorpalhex 10 hours ago

      It is hard for me to swallow the promise of smart glasses and I was dev-ing for the original Google glass.

      It's awkward, battery life is a pittance, the display can be useful but only in select cases. Controls are always an issue. LLMs won't actually fix that - voice control is not the answer.

      • cco 10 hours ago

        Disagree with you there having used Rayban Metas for about six months.

        Always-on access to an LLM via voice is a useful and novel way of interacting with computers.

        From trivial things like asking it about a landmark I'm seeing or when I'm driving to tell me about some historical event (almost like an on tap podcast), to slightly more useful things like asking it to add stuff to my calendar/reminders when I'm biking home.

        It certainly isn't a replacement for a more robust interface, but it is a very nice way of using a computer while I'm out and about and don't want to pull out my phone.

  • jasonsb 13 hours ago

    I was about to make the exact same comment. But then I remembered that there are billions of people who buy products advertised on Facebook and TikTok because it's "cool" and "fun". So what do I know about the future of smart glasses OS? Probably nothing.

poly2it 15 hours ago

How open-source are these glasses really? Are all software components compilable from source, or do they just publish an SDK Espressif-style?

  • alex1115alex 13 hours ago
    • grokx 12 hours ago

      Not really, despite the repo being named MentraOS, this repo seems to include only some mobile apps (that either run on a phone or on the glasses), some server code, and some SDKs. Mentra glasses are likely running on a fork of AOSP, which is not in this repo.

      • SparkyMcUnicorn 12 hours ago

        AOSP (or even a minimal fork) is way too heavy to be running on the glasses. It looks like the firmware is quite minimal and the "OS" is the app.

        https://github.com/Mentra-Community/MentraOS/tree/main/mcu_c...

        • alex1115alex 11 hours ago

          Mentra Live runs AOSP similar to the other AI glasses on the market (Ray-Ban, Xiaomi AI Glasses, RayNeo V3 AI Glasses, etc). It's heavy, but allows us to ship fast. You'll find this code in `asg_client` folder.

          We're also working on a pair of HUD glasses that will release in 2026 using an NRF5340 MCU. The code for this is being developed in the `mcu_client` folder.

          • SparkyMcUnicorn 11 hours ago

            Very interesting. Thanks for the correction/info!

        • numpad0 11 hours ago

          Most smart glasses just run AOSP, that's the path of least resistance. Ones without displays are often just Bluetooth headsets in shape of eyeglasses, and only the ones with cameras but not displays are the ones that run a lightweight OS.

pjmlp 3 hours ago

It seems to be an SDK for apps running on existing iOS and Android devices, hardly an OS.

michaelmior 13 hours ago

> Devs get to write 1 app that runs on any pair of smart glases.

Except it seems they only run on Mentra glasses. Not Meta Ray-Bans, Echo Frames, or any of the many other existing smart glasses platforms.

  • alex1115alex 13 hours ago

    Hey, thanks for commenting, but this isn't true. You can check out our glasses compatibility list here:

    https://github.com/Mentra-Community/MentraOS/blob/main/glass...

    We're also looking to support the Brilliant Labs Halo glasses once they release later this year.

    Regarding Ray-Bans: We'd love to support those, but the Ray-Bans are extremely locked down. Nobody has found a jailbreak yet. We're always open to support more glasses provided they're all-day wearable and have an SDK.

arbayi 17 hours ago

I just found out about them and it seems super good. I wonder why Meta doesn't support such a thing called "Meta Glasses Application Store"

  • randomname4325 13 hours ago

    because developers would immediately make ick apps that violate privacy or do black mirror type things that would kill any momentum

    • SuperShibe 13 hours ago

      Meta is already doing that and they want all the cake for themselves

  • exe34 15 hours ago

    I'm more than happy to develop my own apps, but it doesn't appear that they support any one product with all the features yet.

jajuuka 13 hours ago

Good to see someone jump on these early with FOSS. Seems pretty early days for the this OS and the tech though. No device has full support yet. I'm still not convinced smart glasses are going to have any staying power either.

  • dcreater 12 hours ago

    I would save your excitement. It's likely the same old playbook that every PE backed startup uses

    • caydenpiercehax 4 hours ago

      Fwiw we've been building open source smart glasses tech for 7 years, without a dime of funding until ~9 months ago, you can see it all on GitHub. We actually want this next platform to be open, that's our mission.

mayowaxcvi 11 hours ago

Very excited by all this! Have been searching for something like this for so long!

zoklet-enjoyer 15 hours ago

Live translation is something I've been dreaming about since Google Glass. I just want translation, subtitles, turn by turn directions, and ad blocking.

  • joshuat 15 hours ago

    The idea of ad blocking with smart glasses kind of freaks me out. I'll take additive but I don't want subtractive reality where parts of the world are being hidden from me.

    • dns_snek 9 minutes ago

      > parts of the world are being hidden from me

      There's a Black Mirror episode on that (and more), S2E4 White Christmas.

    • barnabee an hour ago

      > I don't want subtractive reality where parts of the world are being hidden from me

      I’ll make an exception for ad blocking as long as there’s a visual marker where the ad was.

  • ineedasername 14 hours ago

    Even Realities G1 glasses, which support Mentra, will do the first 2. The 3rd is partial, not quite turn by turn, but you can see a map around you with them on

  • rippeltippel 15 hours ago

    > and ad blocking

    The possibility of shooting ads directly into the retina is probably the main driving force behind smart glasses.

    • dmbche 15 hours ago

      And ultimate attention analysis

      • g-b-r 9 hours ago

        and a moving camera with a good excuse to be always on and analyzing everything

asdev 14 hours ago

this doesn't include AR right? it can't overlay stuff on what i'm seeing? if not, then it's pretty useless

  • caydenpiercehax 4 hours ago

    You're right, it doesn't. Because the glasses that you can actually wear today are not MR/AR.

    But as the tech progresses, so will MentraOS to support spatial experiences.

  • barroomhero 14 hours ago

    I'm with you. Augmented Reality is what I'm looking for. I've been dreaming about it for decades.

    • rollcat 14 minutes ago

      Augmented reality is what you already have right here, right now, on your wrist and in your ears.

      In my book, AR is completely invisible, until you need it:

      - A smart watch + strict notification filters (good idea either way), means you only see a notification when something worthy of your attention happens (you get a text, event reminder, etc). You can glance at the notification and decide if it requires your reaction, instead of reaching for your phone. (And likely, waste another 10min on it.)

      - Wireless earbuds with turn-by-turn directions, especially for walking and public transport. Again, you don't need a screen, you can admire your surroundings or read a book.

      - Pay for stuff. If you'd spend 10s on pulling a card out of your wallet, it saves you an hour of your life per year.

      - Track your vitals. Overall not that important, until you notice and suspect something is wrong - you can compare things month over month, see trends, show it to your doctor, etc. I took a hard hit falling off a skateboard, my watch started a countdown to call for help - I stopped it, but I needed a minute to get up, so it was really reassuring to have this.

g-b-r 11 hours ago

Store requiring an account, and apps actually running on their servers.

This is definitely not the smart glasses operating system to converge on.

If there's anything worthwhile in it I'd advise interested people in forking it, and turning it into an actually open open-source operating system.

  • alex1115alex 11 hours ago

    Hey thanks for commenting. Developers host their own apps - they don't run on our servers. See:

    https://docs.mentra.glass/ubuntu-deployment

    https://docs.mentra.glass/railway-deployment

    In your opinion, what do you think should change to make this an "actual" open source OS?

    • g-b-r 10 hours ago

      Ok, although everything seems to go through the "MentraOS Cloud" (https://docs.mentra.glass/core-concepts).

      It's not that the OS is not open source, it's that it seems a privacy nightmare; the fact that the app also runs on the developers' servers just adds to the amount of parties you need to trust. That you and the people around you need to trust, actually.

      And the company has strong connections to China, by the way.

      The system is also not very open, if the users are forced to use your store.

      It seems unlikely that there's much to be salvaged, given that you're using AOSP as the actual operating system.

      • caydenpiercehax 3 hours ago

        MentraOS allows multiple apps to run at the same time and access context at the same time by running apps in the cloud.

        This is enabled by relay servers. You can use Mentra's relay server, or host your own.

        This is the architecture that we use and recommend so multiple apps can run at once and access powerful AI, while saving your phones battery. If you need to run offline or on the edge, we're working on the Mentra Edge SDK so you can skip the cloud, but it has downsides - only 1 app at a time.

        Remember, every app on your phone is communicating with its own backend - which you have to trust. This isn't different.

        Users aren't forced to use the store. You can self host a relay server, self host a store, etc.

croes 15 hours ago

So without their cloud service no apps.

Wouldn‘t call that an OS.

  • fph 14 hours ago

    Ah. I was about to ask if it is private and if the AI can run on-device, but I guess this comments answers all my questions in the negative. Too bad.

    • xeonmc 13 hours ago

      Just as its name indicates, it’s one of the same that comes up every month and produces undesirable waste at the end of the cycle

  • dcreater 12 hours ago

    Ridiculous.

    Based on everything ive been able to infer and the comments on this thread, perhaps safe yo classify this under the FauxSS rather than FOSS

bighead1 14 hours ago

Love this bit from mentra's careers page, https://mentra.glass/pages/careers

  This is not the place for

  * Prioritize work-life balance
  • bobajeff 13 hours ago

    I love how direct Chinese language/culture is. (At least from my perspective.)

    • dcreater 12 hours ago

      They're not Chinese

      • g-b-r 8 hours ago

          > Cayden 凯登 Pierce CEO/CTO/Founder 
          > Cayden leads Mentra, overseeing software, hardware, and operations across San Francisco and Shenzhen
        
          > Nicolo Micheletti
          > In late 2024, he dropped out of Tsinghua University in Beijing to work on MentraOS
        
          > Thomas Tee 
          > Head of Hardware
          > Thomas leads Mentra’s hardware team in Shenzhen
        
          > Mentra Shenzhen 
          > Baoan, Shenzhen,
          > 广东省深圳市宝安区
          > 新安街道创业二路
          > 中洲中央公寓1905室
    • dade_ 8 hours ago

      I was in Shenzhen, electronics market district. I hear Christmas music. What the hell? I round the corner to see a large stage and seating. There is a large banner in English that says, “Consumption Festival”.

  • sneak 13 hours ago

    > We're a squad of hardcore builders between San Francisco and Shenzhen working 996 to build the next personal computer. We're upgrading human intelligence with high bandwidth interfaces. We're transhumanist hackers. And we're not just here for a job. We're here for a mission.

    Being upfront about 996 (and jira hatred further down the page) is wild. I sort of love it.

YVoyiatzis 14 hours ago

If smart glasses can’t self-adjust vision or flag cataracts, they’re missing the point. This is not being discussed.

  • senectus1 7 hours ago

    also the range of shapes... they all seem to be "round" glasses.. I look like an idiot in round glasses i need rectangular shaped lenses.