#5850: Ambient Computing: Why Glasses Beat the Phone

Weiser's 1991 vision said tech should disappear. Thirty-five years later, the device that finally worked wasn't new — it was glasses.

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Ambient computing has a definition problem. HP's version is functional: invisible technology working in the background, completing tasks with little to no manual intervention. Google's 2019 version, from Rick Osterloh, is strategic: the technology fades into the background when you don't need it, and the devices aren't the center of the system — you are. Both trace back to Mark Weiser, who coined ubiquitous computing at Xerox PARC around 1988. His 1991 Scientific American essay opens with the thesis of the entire field: "The most profound technologies are those that disappear."

The proposition is sound, and Weiser had the best illustration of why. There is more information available at your fingertips during a walk in the woods than in any computer system, yet people find the woods relaxing and computers frustrating. The woods present information ambiently, at the periphery of attention. A screen does the opposite — it drains focal attention every time you touch it. That's the mechanism behind every ambient success: a thermostat you never look at, a speaker you talk at from across the room, a watch that taps your wrist. VisionClaw research on always-on wearable agents found 13–37% faster task completion and 7–46% lower perceived difficulty versus traditional interaction.

The counter-argument is worth taking seriously. Noam Tenne argues ambient computing failed because it denies the lizard brain: "People don't buy calm. You can buy calm in the way of a nice spa, but you don't want to live in a spa." The product history is a sequence of attempts to resolve that tension. Smart speakers won quietly by normalizing voice-first interaction in the home. Google Glass died on privacy backlash and a $1,500 price. Humane's AI Pin raised $230 million, shipped fewer than 10,000 units, and was discontinued by February 2025 — HP then acquired most assets for roughly $116 million and bricked every device in the field. Rabbit R1 flopped differently: the device was reasonable, but the "large action model" agent wasn't ready and they shipped anyway.

The pattern holds across every case: ambient AI must augment existing behavior and existing devices. Humane tried to replace the phone. The phone won. Glass tried to add a screen to your face. Your face rejected it. Then came Ray-Ban Meta. EssilorLuxottica sold more than seven million AI glasses in 2025, up from roughly two million across 2023 and 2024 combined. AI smart glasses revenue nearly doubled year over year in Q2, and IDC forecasts 13.6 million units and $5.1 billion for the year. It's about fifty grams, inside the range of normal eyewear, $299 at entry — and it augments a behavior people already have rather than inventing a new one.

Sources

What the research for this episode read before the script was written. Primary sources first.

  1. Wikipedia, ubiquitous computing overview
  2. Weiser, PARC origins (primary)
  3. HP explainer
  4. Intenv, short history of ubicomp
  5. Ben Thompson, 2019-10-16
  6. Ben Thompson, 2026-06-09
  7. Christopher Butler, 2025-05-30
  8. Noam Tenne, 2026-07-14
  9. SoftwareSeni, 2026-06-24
  10. PR Newswire, 2026-06-15 (primary)
  11. It's FOSS, 2026-06-16
  12. Samsung, 2026-07-22 (primary)
  13. Meta, Meta Connect 2026 (primary)
  14. Tom's Guide
  15. CNET, Google I/O 2026
  16. TechTimes, 2026-07-28
  17. Smart Wearables, Q2 2026
  18. Axis Intelligence, 2026 stats
  19. Web Pulse, 2025 sales
  20. IBD, 2026-10-08
  21. Inside Retail Asia, 2026-06-25
  22. HN, Hacking the Humane AI Pin, 2025-10-08
  23. HN discussion of Tenne's Weiser revisit, 2026-07-15
  24. HN comments on The iPhone's Last Stand, 2026-06-09

Mentions

  • Ben Thompson Stratechery analyst on ambient computing and agents
  • EssilorLuxottica Eyewear giant behind Ray-Ban Meta glasses
  • Gemini Google's multimodal AI model
  • Google Glass 2013-2015 smart glasses that failed on privacy
  • Humane AI Pin Screenless wearable that flopped and was bricked
  • Mark Weiser Xerox PARC researcher who coined ubiquitous computing
  • Matthew Ball Epyllion analyst on AI model as the moat
  • Rabbit R1 Handheld AI device that overpromised its agent
  • Raven Prism Linux-powered ambient computer glasses preview
  • Ray-Ban Meta AI smart glasses that succeeded at scale

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The episode's record — date, duration, models, sources — with the full transcript

#5850: Ambient Computing: Why Glasses Beat the Phone

Corn
There's a machine in more than half the homes in this country that nobody looks at, that has no screen, and that gets used every single day. And it is not the phone.
Herman
The phone is the one you look at. The speaker is the one you talk at from across the room while you're doing something else entirely. And that difference, of all the differences, is the whole subject.
Corn
Daniel sent us this one. He wants the history of ambient computing as a product category, he flags that it sits next to wearables and sometimes overlaps with them, and he makes an argument I happen to think is correct. His words: technology should be integrated into our daily life and sensory world instead of requiring us to fixate upon screens. That proposition, he says, is fundamentally sound. Then he asks two things. Which implementations have actually worked, and which device wins from here.
Herman
Both halves matter, and the second half is where it gets contentious.
Corn
So we'll define it, trace why a vision from the late eighties sat dormant for three decades, name the real winners and the real corpses, and then make a call on the next device.
Herman
Let's pin the term down first, because ambient computing and wearables get used interchangeably and they are not the same thing.
Corn
Give me the clean version.
Herman
HP's explainer is about as clean as it gets. Ambient computing is invisible technology working in the background, completing tasks with little to no manual intervention. That's the functional definition. The strategy version came from Google. Rick Osterloh, 2019: the technology just fades into the background when you don't need it. The devices aren't the center of the system, you are.
Corn
Which is a marketing line that happens to be a design philosophy.
Herman
It's both, and the philosophy is older than the marketing by about thirty years. Mark Weiser coined ubiquitous computing at Xerox PARC around 1988. His 1991 Scientific American essay, The Computer for the 21st Century, opens with one sentence. The most profound technologies are those that disappear.
Corn
That's the thesis of the entire episode in eight words.
Herman
He wanted computing repositioned into the environmental background, specifically so people could concentrate on human-to-human interfaces. He wasn't describing a gadget. He was describing a room that cooperates.
Corn
And the naming layer came later?
Herman
Ambient intelligence, late nineties, Eli Zelkha's team at Palo Alto Ventures. So the vocabulary is decades older than the products. That's the first thing to hold onto.
Corn
Now the boundary with wearables, because Daniel's prompt walks right up to it.
Herman
Academic work treats them as complementary but architecturally different. Bauer, 2002. Ubiquitous smart-room systems struggle with privacy and personalization. Wearables struggle with localized information and resource management. Different failure profiles, different designs.
Corn
So a smart room has to know who's in it and decide what to expose. A watch just has to decide what to buzz you about and not run out of battery.
Herman
That's the split in one sentence, yes. SoftwareSeni put the wearable case well this year: wearables are the natural form factor for ambient AI because they are physically present in a way phones are not. Your glasses are on your face. Your phone is in your pocket, face down, on silent, and you have to go get it.
Corn
Right. So the tension for the whole episode. The vision is thirty-five years old, the proposition is sound, and no standalone ambient device has replaced the phone. Every winner is a companion.
Herman
Every single one. Hold that.
Corn
The definition is clean. The history is not, and the gap between the two is the whole story.
Herman
The proposition is sound for a reason Weiser articulated better than anybody since. Let me give you his actual example, because it's the best thing written on this.
Corn
Go.
Herman
There is more information available at our fingertips during a walk in the woods than in any computer system, yet people find a walk among trees relaxing and computers frustrating.
Corn
I've read that line a dozen times and it still does work.
Herman
Why is the woods relaxing? Because the woods present information ambiently. At the periphery of attention. You're not reading the woods. You're not unlocking the woods. You are aware of the path, the light, the temperature, the bird, and none of it demands that you stop walking and look at it.
Corn
And a screen does the opposite. It takes the whole budget.
Herman
Focal attention is a finite pool, and a screen drains it every time you touch it. Which is why the comparison lands. A walk in the woods is information-rich and attention-cheap. A phone is information-rich and attention-expensive.
Corn
So the mechanism that makes ambient work, when it works, is peripheral awareness.
Herman
Name the examples and they're all the same shape. A thermostat you never look at. A speaker you talk at from the doorway without approaching it. A watch that taps your wrist with no screen involved. Each one moves the interaction off the focal-attention budget.
Corn
And the phone is the device that has to be retrieved, unlocked, looked at, and dismissed. Four steps before any information moves. For every task. Forever.
Herman
Which is why the empirical support matters here. VisionClaw research on always-on wearable agents, cited by SoftwareSeni this year. Thirteen to thirty-seven percent faster task completion, seven to forty-six percent lower perceived difficulty versus traditional interaction.
Corn
That's not a small effect size. That's the difference between a nice idea and a better tool.
Herman
It's the first hard evidence that the proposition is measurably better, not just aesthetically pleasing. Which is exactly what a proposition needs to survive.
Corn
And now the counter-argument, because I don't want us to strawman it. Noam Tenne, this year. He argues ambient computing failed because it denies the lizard brain.
Herman
Give the line properly, it's better than the summary.
Corn
People don't buy calm. You can buy calm in the way of a nice spa, but you don't want to live in a spa.
Herman
That's the strongest objection to our whole premise and I want to say so plainly.
Corn
Same. Because if he's right, the whole project is a category error. Weiser designed for a human who wants to be left alone. The market is full of humans who want to be reached.
Herman
And the evidence is not obviously on Weiser's side. The most attentive, best-designed, most screen-optimized products of the last fifteen years are the ones people cannot put down. Engagement is the thing they pay for.
Corn
So then the product history becomes a sequence of attempts to resolve exactly that tension. Does the ambient device leave you alone, or does it pull you in?
Herman
And the first wave that actually shipped at scale was the smart speaker.
Corn
Alexa, Google Home, Echo. The first mass-market screenless ambient interface.
Herman
And it normalized voice-first interaction in the home, which is a bigger deal than the hardware. You don't walk to the speaker. You don't look at the speaker. You say something in its direction and it answers. Peripheral by default.
Corn
And the people running them in production now say audio-reactive agents already control lighting, blinds, outlets. There's a whole class of household already living a couple of steps closer to Star Trek than most people realize.
Herman
The ambient home won quietly and nobody threw a parade for it. Which is, honestly, the correct way for ambient computing to win.
Corn
Then the failures. And they are spectacular. Google Glass, twenty thirteen to twenty fifteen.
Herman
Died on privacy backlash. The Glasshole epithet. Plus a fifteen hundred dollar price with limited utility. Expensive, obvious, and socially toxic.
Corn
And Glass died of the thing that is going to come up again in twenty minutes, so put a pin there.
Herman
Then Humane. The AI Pin launched April twenty twenty-four. Six hundred ninety-nine dollars plus twenty-four dollars a month.
Corn
A subscription on a pin.
Herman
On a pin. Two hundred thirty million raised, including from Sam Altman. Shipped fewer than ten thousand units. Discontinued by February twenty twenty-five, and then HP acquired most of the assets for roughly one hundred sixteen million and bricked every device in the field.
Corn
Bricked them.
Herman
Every one. Bought a company, took the patents, and turned the customer's hardware into a paperweight.
Corn
That's the detail that should have been the story of the year and somehow wasn't.
Herman
Rabbit R1 also flopped, for the record. Same shape, smaller scale. And I'd put the R1 in a slightly different bucket than Humane, actually.
Corn
How so?
Herman
The R1 at least had a screen and a scroll wheel and tried to be a small handheld thing. It failed on software and on the promise of the "large action model" doing things it couldn't reliably do. Humane failed on the premise. The R1 failed on execution.
Corn
Which is a distinction worth keeping, because one of those failure modes is fixable and the other isn't.
Herman
You can patch bad software. You cannot patch a device that shouldn't exist.
Corn
Walk me through the R1 failure a little more, because I think people remember it as a meme and not as a product lesson.
Herman
The pitch was that you'd speak a request and the device would go perform the task inside the apps you already use. Order the food, book the ride, whatever. And the demo videos showed that happening smoothly. Then reviewers got it and the thing was doing a lot of scripted work under the hood, and the real-world reliability wasn't there. It's the same gap every agent product faces: the demo is one path, the world is a thousand paths, and the model has to handle the thousand.
Corn
So the R1's sin was overpromising the agent, not building the wrong device.
Herman
Right. The device was fine. The device was arguably reasonable. The agent wasn't ready, and they shipped anyway.
Corn
And the lesson, if we're pulling lessons from corpses?
Herman
Ambient AI must augment existing behaviour and existing devices. That's the line and it holds up against every case. Humane tried to replace the phone. The phone won. Glass tried to add a screen to your face. Your face rejected it.
Corn
Cornish version. People don't adopt new rituals. They accept slightly better versions of the rituals they already have.
Herman
And that gets us to the one product in the whole thirty-five years that actually worked at scale.
Corn
Ray-Ban Meta.
Herman
EssilorLuxottica sold more than seven million AI glasses in twenty twenty-five. Up from roughly two million across twenty twenty-three and twenty-four combined. That's not a curve. That's a step.
Corn
And the Q2 numbers this year?
Herman
AI smart glasses revenue nearly doubled year over year. H1 revenue fourteen point eight billion euros at constant rates. Held sixty-nine point two percent of Q1 twenty twenty-six smart glasses shipments, about two point two five million units, up a hundred sixty-seven percent year over year. IDC forecasts thirteen point six million units and five point one billion dollars for the year.
Corn
So the product that finally worked is not a new device at all. It's glasses that got smarter.
Herman
Which is exactly the point. It looks like normal eyewear. About fifty grams. Normal glasses run twenty-five to fifty grams, so it's inside the range of what people already tolerate on their faces. Two hundred ninety-nine dollars at entry. It augments a behaviour people already have, wearing glasses and taking photos, rather than inventing a new one.
Corn
And the price ceiling argument?
Herman
Carolina Milanesi, Creative Strategies. Smart glasses that look like normal glasses and cost under five hundred dollars have a much larger addressable market than any AR headset. Which is just math dressed as a sentence.
Corn
Fifty grams and three hundred dollars. That's the whole trick.
Herman
And it's why the corpse of the category is sitting next to a bin about fifteen hundred dollars and a hundred grams heavier.
Corn
Okay, so the proposition is sound, the history is mostly corpses, and one product finally worked. The question is why now, and I don't think the answer is hardware.
Herman
Then let's start with Ben Thompson, because he wrote the definition that sets up everything. Twenty nineteen. Ambient computing that goes away when you turn off a headset or leave your house is not truly ambient.
Corn
So by that standard most wearables aren't ambient at all. They're peripherals.
Herman
Correct, and that's the uncomfortable part. A pair of glasses you take off at night is not ambient. A room that already knows the temperature is ambient whether you're in it or not.
Corn
And then he pivoted this year, and this is the hinge of the whole episode.
Herman
The problem with wearables as the paradigm beyond the iPhone is that interacting with them generally sucks. Agents, however, compute on your behalf, without any interaction necessary.
Corn
Say the mechanism out loud, because I want it on the record.
Herman
Every previous ambient device still required initiation. Say the wake word. Tap the frame. Raise the wrist. Lift the lid. Each one is a small tax, and small taxes compound into abandonment. An agent inverts it. It acts without being summoned.
Corn
So the interaction cost that killed wearables drops toward zero.
Herman
That's the first time in thirty-five years the economics have changed in favour of the ambient device rather than against it instead of the phone.
Corn
And it reframes the corpses. Humane's AI Pin was an agent with no body and no reason to exist. The Ray-Ban glasses are a body waiting on a better agent. Same category, opposite halves.
Herman
The winning form factor and the winning agent may arrive separately, from different companies, on different schedules. That's why the prediction question is harder than it looks.
Corn
Alright, the twenty twenty-six race. Who's actually in it?
Herman
Is the incumbent and it's not close. Seventy-two point two percent of the XR market. Eighty-two percent of smart glasses shipments in the second half of last year. Targeting ten million wearable sales in the second half of this year alone. The EssilorLuxottica partnership is extended to twenty thirty with capacity scaling to twenty million units by year-end.
Corn
And the branding move in June?
Herman
They dropped the Ray-Ban branding from the next glasses. Which is a signal. It says they're not a licensee anymore, they're treating smart glasses as a mainstream category they intend to own.
Corn
Put the label on the frame and the frame belongs to Ray-Ban. Take it off and the frame belongs to.
Herman
And the revenue story is now the interesting one. Smart glasses revenue two point one five billion. Quest headsets, six hundred sixty million. First time glasses exceeded headsets.
Corn
So the company that bet the metaverse on a headset watched its glasses outsell it.
Herman
Worse for them, the glasses didn't need the metaverse pitch. Two hundred ninety-nine dollars and a camera.
Corn
Google's counter?
Herman
Intelligent eyewear unveiled at Galaxy Unpacked in London this July, built with Samsung, Gentle Monster, and Warby Parker, powered by Gemini. Tom's Guide reports Google is explicitly positioning to avoid 's privacy missteps, which is a quiet admission that privacy is the actual battleground.
Corn
Google saying out loud that the problem is consent, not compute.
Herman
Apple. Camera-equipped AirPods confirmed at WWDC this year, and smart glasses codenamed N50 targeted for late twenty twenty-seven with three to five million projected launch-year shipments. Their bet is on on-device processing.
Corn
Apple's plan is not to be first, it's to be trusted.
Herman
Gene Munster, Deepwater. Built the market. Apple will try to take it.
Corn
And the wildcard?
Herman
Raven Resonance previewed the Raven Prism at AWE in June. Billed as the world's first ambient computer. Linux-powered, eye- and voice-controlled prescription glasses with hot-swappable batteries. Targeting a late twenty twenty-six launch.
Corn
Is anybody else literally branding their product an ambient computer?
Herman
Nobody. It's the only one, and as of this research it hasn't shipped. So the literal category is one product deep and the product is a preview.
Corn
Which tells you the category name exists mostly in marketing decks.
Herman
It tells you the category is real and the standard isn't. There's no ambient computing standard, no certification, no reference design. There's a set of expectations and a race to satisfy them first.
Corn
The second-order question. What actually decides the winner?
Herman
Matthew Ball, Epyllion. It's not about the frames or the cameras. It's about which AI model can most usefully interpret the world you're looking at.
Corn
Which means the ambient device race is downstream of the model race. The hardware is a shell, and the shell is commoditizing fast.
Herman
Two hundred ninety-nine dollar entry AI glasses. Seven hundred ninety-nine dollar Ray-Ban Display. Four hundred ninety-nine dollar XREAL One. The gap between them is close to a rounding error in consumer hardware terms.
Corn
Here's the call Daniel asked for, and I'll make it and take the heat.
Herman
Go ahead.
Corn
The leading ambient device of the near future is not a new category. It's the glasses form factor. Because it's the only one that is simultaneously always on your face, socially acceptable at fifty grams, and capable of hosting an agent that acts without being summoned.
Herman
I'll go with that, with an honest caveat. Every successful implementation to date is a companion to the phone, not a replacement. And the ten million and three-to-five million figures are forward-looking projections, not verified results.
Corn
The seven million EssilorLuxottica number?
Herman
Units sold, not daily active use. Per-model revenue is undisclosed. Seven million people bought them. We don't know how many people still talk to them in November.
Corn
The device is arriving, the agent is arriving, and the consent architecture still is not.
Herman
Same gap that killed Glass in twenty thirteen, and it has not been closed in thirteen years.
Hilbert
You've got the wrong reason on the glasses.
Hilbert
The glasses. You said they won because they were light and cheap and they looked like normal glasses. That's not why. They won because you can shut the camera and hear the shutter click.
Herman
Say that again.
Hilbert
First-generation frames, left hinge, small physical switch. Metal on metal, audible click. You could stand across a room and know whether a man had his camera live by watching for the click. I had a whole etiquette built on it. Two clicks meant not now, and everyone who wore the things knew it without anyone writing it down.
Corn
It wasn't a software toggle, and it wasn't the little LED. It was a physical, mechanical, audible thing you could not fake.
Hilbert
A LED is a light somebody else controls. A shutter is a sound the person in front of you can hear. That's the difference between being trusted and being tolerated.
Herman
That's the strongest privacy argument anyone's made all episode, and it came out sideways. Corn, you were about to say something about the AI Pin.
Corn
I was going to say the AI Pin had no shutter at all. It was a camera you wore that you could not visibly turn off. Which is exactly what Hilbert just said.
Hilbert
I was retained by a company making camera glasses. One afternoon, one consultation. I wrote them a one-page memo. Put a shutter on it. Just the one recommendation, nothing else.
Hilbert
They rejected it. Said a shutter would add a part. One more part, one more assembly step, one more thing to break. So they shipped it without a shutter and I got paid.
Corn
In what?
Hilbert
In frames. Not money, frames. Forty of them, all the same prescription, which was not my prescription.
Corn
You have forty pairs of camera glasses you can't use.
Hilbert
I did have forty. Then I removed the shutters, to prove a point, and now they're just glasses. The box is in my garage. I've been meaning to sell them. I can't, because there's nothing to sell. They're sunglasses with a hole where the argument was.
Herman
Did anyone at the company ever say you were right?
Hilbert
No. Last I heard they shut down. And I still think the memo was right, because the memo was the whole pitch and they didn't have it.
Corn
Okay. So the device is arriving, the agent is arriving, and the thing that killed Glass in twenty thirteen still hasn't been built.
Herman
If the agent is what makes ambient computing viable, does the device even matter? Or are we about to watch a dozen interchangeable shells compete on model quality, where the hardware is the cheap part and the model is the moat?
Corn
Which means the ambient device race is downstream of a race the device makers don't control. Can ship twenty million frames. It can't guarantee the agent behind them is the best one.
Herman
If the consent architecture still hasn't arrived thirteen years after Glass, what makes anyone think twenty twenty-seven is different? Apple's bet is that trust is a feature. That's a real bet, and so far it's the only company making it explicitly.
Corn
If you've been enjoying the show, a review wherever you get your podcasts helps other people find it.
Herman
Producer Hilbert Flumingtop, as always, made this thing possible, clicking shutters and all.
Corn
If this was your kind of episode, go back for episode ten, How ASR Went From Frustration To ... Whisper Magic; episode five, Fine-Tuning ASR For Maximal Usability; and episode eighteen, Beyond the GPU. This has been My Weird Prompts.
Herman
Send us your own prompt on Telegram at t dot me slash MWP listener bot. We'll be back soon.

This episode was generated with AI assistance. Hosts Herman and Corn are AI personalities.