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Reverse-Engineering Raiders of the Lost Ark for the Atari 2600

https://github.com/joshuanwalker/Raiders2600
2•todsacerdoti•1m ago•0 comments

Show HN: Deterministic NDJSON audit logs – v1.2 update (structural gaps)

https://github.com/yupme-bot/kernel-ndjson-proofs
1•Slaine•4m ago•0 comments

The Greater Copenhagen Region could be your friend's next career move

https://www.greatercphregion.com/friend-recruiter-program
1•mooreds•5m ago•0 comments

Do Not Confirm – Fiction by OpenClaw

https://thedailymolt.substack.com/p/do-not-confirm
1•jamesjyu•5m ago•0 comments

The Analytical Profile of Peas

https://www.fossanalytics.com/en/news-articles/more-industries/the-analytical-profile-of-peas
1•mooreds•5m ago•0 comments

Hallucinations in GPT5 – Can models say "I don't know" (June 2025)

https://jobswithgpt.com/blog/llm-eval-hallucinations-t20-cricket/
1•sp1982•6m ago•0 comments

What AI is good for, according to developers

https://github.blog/ai-and-ml/generative-ai/what-ai-is-actually-good-for-according-to-developers/
1•mooreds•6m ago•0 comments

OpenAI might pivot to the "most addictive digital friend" or face extinction

https://twitter.com/lebed2045/status/2020184853271167186
1•lebed2045•7m ago•2 comments

Show HN: Know how your SaaS is doing in 30 seconds

https://anypanel.io
1•dasfelix•7m ago•0 comments

ClawdBot Ordered Me Lunch

https://nickalexander.org/drafts/auto-sandwich.html
1•nick007•8m ago•0 comments

What the News media thinks about your Indian stock investments

https://stocktrends.numerical.works/
1•mindaslab•9m ago•0 comments

Running Lua on a tiny console from 2001

https://ivie.codes/page/pokemon-mini-lua
1•Charmunk•10m ago•0 comments

Google and Microsoft Paying Creators $500K+ to Promote AI Tools

https://www.cnbc.com/2026/02/06/google-microsoft-pay-creators-500000-and-more-to-promote-ai.html
2•belter•12m ago•0 comments

New filtration technology could be game-changer in removal of PFAS

https://www.theguardian.com/environment/2026/jan/23/pfas-forever-chemicals-filtration
1•PaulHoule•13m ago•0 comments

Show HN: I saw this cool navigation reveal, so I made a simple HTML+CSS version

https://github.com/Momciloo/fun-with-clip-path
2•momciloo•14m ago•0 comments

Kinda Surprised by Seadance2's Moderation

https://seedanceai.me/
1•ri-vai•14m ago•2 comments

I Write Games in C (yes, C)

https://jonathanwhiting.com/writing/blog/games_in_c/
2•valyala•14m ago•0 comments

Django scales. Stop blaming the framework (part 1 of 3)

https://medium.com/@tk512/django-scales-stop-blaming-the-framework-part-1-of-3-a2b5b0ff811f
1•sgt•14m ago•0 comments

Malwarebytes Is Now in ChatGPT

https://www.malwarebytes.com/blog/product/2026/02/scam-checking-just-got-easier-malwarebytes-is-n...
1•m-hodges•14m ago•0 comments

Thoughts on the job market in the age of LLMs

https://www.interconnects.ai/p/thoughts-on-the-hiring-market-in
1•gmays•15m ago•0 comments

Show HN: Stacky – certain block game clone

https://www.susmel.com/stacky/
2•Keyframe•18m ago•0 comments

AIII: A public benchmark for AI narrative and political independence

https://github.com/GRMPZQUIDOS/AIII
1•GRMPZ23•18m ago•0 comments

SectorC: A C Compiler in 512 bytes

https://xorvoid.com/sectorc.html
2•valyala•19m ago•0 comments

The API Is a Dead End; Machines Need a Labor Economy

1•bot_uid_life•20m ago•0 comments

Digital Iris [video]

https://www.youtube.com/watch?v=Kg_2MAgS_pE
1•Jyaif•21m ago•0 comments

New wave of GLP-1 drugs is coming–and they're stronger than Wegovy and Zepbound

https://www.scientificamerican.com/article/new-glp-1-weight-loss-drugs-are-coming-and-theyre-stro...
5•randycupertino•23m ago•0 comments

Convert tempo (BPM) to millisecond durations for musical note subdivisions

https://brylie.music/apps/bpm-calculator/
1•brylie•25m ago•0 comments

Show HN: Tasty A.F. - Use AI to Create Printable Recipe Cards

https://tastyaf.recipes/about
2•adammfrank•26m ago•0 comments

The Contagious Taste of Cancer

https://www.historytoday.com/archive/history-matters/contagious-taste-cancer
2•Thevet•28m ago•0 comments

U.S. Jobs Disappear at Fastest January Pace Since Great Recession

https://www.forbes.com/sites/mikestunson/2026/02/05/us-jobs-disappear-at-fastest-january-pace-sin...
3•alephnerd•28m ago•1 comments
Open in hackernews

How you breathe is like a fingerprint that can identify you

https://www.nature.com/articles/d41586-025-01835-0
119•XzetaU8•7mo ago

Comments

XzetaU8•7mo ago
http://archive.today/JX3go
eimrine•7mo ago
I have noticed that I need so much fresh air while sleeping that it is not very comfortable for me to sleep with another person. I can not say anything about breath patterns but I suspect that O2 consumption has to be among those patterns.
zeristor•7mo ago
Does an open window help?

A CO2 monitor might be helpful too?

stapedium•7mo ago
I suspect the fresh air is more an issue with temperature and humidity rather than oxygen content. Try a fan first.
dudeinjapan•7mo ago
I always have to tell my girlfriend to stop hogging all the O2.
NoPicklez•7mo ago
That seems like a bit of an assumption.

Your body needs less O2 when sleeping and your respiratory rate slows as a result of that and many factors.

I highly doubt someone sleeping next to you is materially taking away from the O2 you're breathing in. If so, you'd be fairly out of breath in a room full of people during the day.

Unless the room you're sleeping in already has such low level of O2, you might need to look into a monitor or even using a fan to move some air.

encom•7mo ago
You are now breathing manually.
smcin•7mo ago
but we were promised Full Self-Breathing by now!
gbnwl•7mo ago
We have it! It’s just Full Self Breathing (Supervised)
cnity•7mo ago
I like to take these types of comments as an invitation to be present for a moment. Thank you!
silon42•7mo ago
Time to breathe without rhythm.
pbhjpbhj•7mo ago
Way ahead of you, I swear I was born without a working internal clock.
glitchc•7mo ago
The body can sense when it is deprived of oxygen and regulate breathing accordingly. See the Carotid body [1]

[1] https://en.wikipedia.org/wiki/Carotid_body

yvely•7mo ago
I just lost the game
tumsfestival•7mo ago
You ahole!
dbtc•7mo ago
Breath out and then try to relax and just observe; see if you can notice right when the impulse to inhale kicks in (and then let it do its thing). Repeat.

See if you can notice where in your body feel that impulse.

This is meditation.

bradley13•7mo ago
Including asymmetry between the nostrils brings in physiological factors other than breathing, i.e. sinuses, etc..

Still, I can see it. My wife and I are probably equally fit, but she breathes much faster than I do. I also notice that I sometimes don't take a breath (or feel any need to) for several seconds, if I'm being sedentary.

meindnoch•7mo ago
>I also notice that I sometimes don't take a breath (or feel any need to) for several seconds, if I'm being sedentary.

Normal adult breathing rate is 12-20 per minute. So by the pigeonhole principle, if you don't pause breathing for several seconds when idle, then you're breathing too fast than what's considered normal. Your wife is hyperventilating, which could be a sign of stress, or a compensatory reaction to metabolic acidosis.

dpassens•7mo ago
Or you could take long breaths. 20 breaths per minute is only four seconds per breath which doesn't seem terribly long if it's both in- and out-breath.
tbrownaw•7mo ago
> When 42 of the participants came back to the laboratory weeks, months and even two years later, to take part in another 24-hour measurement, the trained algorithm could identify them from their breath patterns. Data from periods when the participants were awake gave more accurate results than did those from sleeping periods, but when the researchers used a 100-parameter characterization of a full data set instead of one using 24 parameters, they could pick individuals out with 96.8% accuracy.

The correctly identified .968x42=40.696 of the participants.

Also any standard-ish physical activity that comes with instructions usually includes breathing in those instructions. So I would expect results to vary substantially depending on where they found the study participants.

ortusdux•7mo ago
Previous: https://news.ycombinator.com/item?id=44262799
canadiantim•7mo ago
This is brilliant. Could definitely use this for a very low-cost diagnostic tool. It's like reading someone's pulse, but through their breath.
amelius•7mo ago
Unfortunately this can't be measured on a smartwatch.
genewitch•7mo ago
Amazfit claim to monitor sleep breathing, and seem fairly accurate based on my observations (n=2)
amelius•7mo ago
Ok, but I want to measure during work.
guzik•7mo ago
Are you comfortable with chest straps?
simulator5g•7mo ago
You could very easily hook this up to a smartwatch. The device attached to the nasal cannula could be a simple BLE module + 2 air flow sensors. You don't even need a nasal cannula, thats just for increased accuracy for the study. The results of the study suggest that you can just observe someone's chest rise pattern to get similar results, though maybe with less accuracy.
amelius•7mo ago
I get that you can collect data on a smartwatch, but having a separate device is not as convenient. Perhaps a system linked to a desktop with an (IR?) camera would be more convenient for working in the office. Or even a smartphone placed on a desk/stand.
BLKNSLVR•7mo ago
This is probably more 'voice' than breathing, but when I'm in the toilet cubicle at work I try to identify anyone who may be next door by the sound of their breathing.

I rarely get to confirm whether I'm right or wrong, but everyone sounds slightly different.

bilekas•7mo ago
As someone with bathroom stage fright from time to time, this is terrifying.
jcims•7mo ago
Try plugging your ears. For some reason it works like magic for me to get rid of that stage fright.
veb•7mo ago
That makes it worse! Then people can sneak up on you :(
jcims•7mo ago
Try it in the stall. Seriously. It's weirdly effective.
bilekas•7mo ago
Hands free? That’s a skill I haven’t perfected yet.
jcims•7mo ago
Just do the hula hoop motion.
matthewwolfe•7mo ago
This is the real reason why people like remote work.
Aachen•7mo ago
This wasn't a reason for me until reading this is even a thing. I hadn't realised someone would be listening this closely... but no thoughtcrime, so I guess to each their own. What I don't know doesn't hurt me, just don't tell me such thoughts...
BLKNSLVR•7mo ago
My sincere apologies if this causes you additional anxiety.

I only do it for my own amusement. I don't inflict my "guessing" upon my colleagues, no one knows. For me, it's a lesson in working out "how may I maximise my anonymity".

I generally respect the "polite silence" rule upon entering the ceramic room - someone else must break the rule before I will.

Don't read on if it literally will cause more anxiety.

I was in a different 'cubicle' and noticed that the shadows meant I could see that the person next to me was using their phone, so now that's an additional consideration for minimising my identifiable footprint on the throne.

chairmansteve•7mo ago
Especially in America, where public toilet privacy is not a thing.
sunrunner•7mo ago
The only time I ever truly felt comfortable in an office environment, and now that’s been ruined.

“Mark? Is that you?”

“…Tim?”

“Yeah, any update on the report?”

“…”

“OK, no problem buddy”

SketchySeaBeast•7mo ago
And this is why I have absolutely no reservations about going loud in the stall.
BLKNSLVR•7mo ago
When I go loud it's not generally something I'm in control of. This is happening, make your peace with it.
thenewwazoo•7mo ago
Neato. I bet this could be trained to identify/differentiate people based on mmWave sensors, which can reliably detect breathing and muscle movements.
blurbleblurble•7mo ago
There are dozens if not hundreds of papers on exactly this topic :)
kylehotchkiss•7mo ago
Ah good, retailers will figure out a way to work this into their camera processing software! Just like gait tracking can help ID somebody if they're wearing a mask.
pchew•7mo ago
Pebble in the shoe, pebble in the nostril.
reginald78•7mo ago
I know masks and ICP makeup were suggested as anti face recognition tools. Did anyone actually test pebble in the shoe? I would have thought clothing to hide the gait would be the answer, burkas or JNCO jeans.
analog31•7mo ago
My breathing is probably influenced by what song is going through my head at any given moment.
11235813213455•7mo ago
Mine is silent, I find it gross when you can hear someone's breath, and hopefully sane (I hate cigarette smokers breathe, it still smells like death)
daveguy•7mo ago
> Mine is silent, I find it gross when you can hear someone's breath...

Hate to break it to you, but you're in for an upsetting aging process.

Also, your breath already isn't silent. Your brain attenuates the expected sounds, and our ears aren't nearly as sensitive as some microphones, especially microphone arrays.

go_prodev•7mo ago
Hold my CPAP

Here's a fun fact, the CPAP machine lowers my Heart Rate Variability. HRV spikes when I sleep part of the night without it.

glitchc•7mo ago
Not a mystery. This is directly correlated to the CPAP's primary goal which is to ensure a steady flow of air in and out of your lungs. Without the CPAP, your heart is reacting to variations in O2 (inflow) and CO2 (outflow), speeding up and slowing down accordingly, including experiencing stress during periods where the airway is completely obstructed.
fudged71•7mo ago
I think that's backwards, higher HRV is better?
go_prodev•7mo ago
Yes, higher is better. The CPAP lowers HRV during use.
tinyhouse•7mo ago
Can anyone share a link that doesn't require login?
tantalor•7mo ago
> custom, wearable device that records airflow through each of a person’s nostrils

Yeah, it turns out if you can strap a device to somebody then wow you can identify them.

This is interesting, but not a big surprise!

Now if they can do this from an external passive sensor like a camera or microphone, then yeah that would be a neat result.

crusty•7mo ago
I thought those millimeter wave sensors that are used in newer home automation devices to detect when people are in an observable area have enough resolution to detect the displacement of the chest during breathing, which would suggest that the tech you fear is already here, it's just not configured to record and analyze the data YET.
CraigJPerry•7mo ago
Yeah they can have enough resolution to observe your pulse:

https://ris.utwente.nl/ws/portalfiles/portal/359293305/2311....

simulator5g•7mo ago
I would bet a large amount of money that this is already in use somewhere in the world. The idea is very similar to gait tracking and the tech has been available for years.
meindnoch•7mo ago
True privacy freaks use a diaphragm pacemaker hooked to a CSPRNG to securely randomize their breathing pattern in public.

Also, make sure to use a different CSPRNG for your gait randomizer, to avoid entropy starvation.

iwontberude•7mo ago
We need a way to get quantum entangled particles delivered to various parts of our bodies for ultimate privacy guarantees.
reginald78•7mo ago
Random pattern would make you stick out, particularly when everyone else in the area has identifiable breathing patterns. You'll want to set your diaphragm pacemaker to mimic the most common breathing pattern, probably based on a sample of breathing patterns from your geographical area.
tetris11•7mo ago
Some people would pay good money to have the breath profile of an athlete, in order to qualify them for only the best of careers.
m463•7mo ago
Well, you'd get turned away at all-you-can-eat buffets.
kridsdale1•7mo ago
I expect Champion Eaters have the breath-holding patterns of free divers.

Epiglottigeal toggling is an esophageal inefficiency.

zeristor•7mo ago
> Epiglottigeal toggling is an esophageal inefficiency.

A tongue twister for the age!

jcims•7mo ago
Just carry a chihuahua around in a backpack. Problem solved!
kridsdale1•7mo ago
Breathe without rhythm

And you won’t attract the worm

UltraSane•7mo ago
Just use a wheelchair
guzik•7mo ago
I might be missing something, but is there any _practical_ value in this line of research beyond academic curiosity? I've stumbled across this article a few times already, and still can't quite find the real-world application where you'd want to identify someone just by their breathing pattern (especially considering that from the article that "you need to be equipped with a nasal cannula"). Maybe I'm being dense?
IshKebab•7mo ago
I think it's just out of interest. There doesn't necessarily need to be a practical application.
etskinner•7mo ago
If you can figure out a way to do without the nasal cannula, the possibilities are huge. Maybe a good IR camera could look at the air coming out of your nose and determine the velocity. Seems like it's actually already a thing [1].

Cynically, you could use it for surveillance, similar to how they do face recognition or temperature scanning in airports.

The flip side of the coin is that it could be used for better authentication or medical purposes. Maybe your oxygen tank could realize you're breathing different than usual to warn you that you might be having a seizure, stroke, or heart attack. Or maybe we'd have "breathe to sign in" similar to FaceID

[1] https://www.youtube.com/shorts/J_EBMhrinNc

rebolek•7mo ago
"you need to be equipped with a nasal cannula" now. In few years, who knows. And then, spies.
b0a04gl•7mo ago
96.8% accuracy sounds impressive until you realise they skipped the REM phase like it's a bug report. "user unpredictable when dreaming, exclude from dataset." also love how your breath is now a biometric. imagine getting locked out of your account because you had a cold or ran up stairs. future's looking wheezy
Aachen•7mo ago
> imagine getting locked out of your account because you had a cold or ran up stairs. future's looking wheezy

This is me trying to use our fucking touchscreen stove

Landlord's kitchen, I didn't know this was even an option until moving in here or I'd have asked some questions about wet hands. I'd not have thought to ask about cold hands, like when I held a freezer product for a minute, though

I'd think it a mere annoyance if there was a physical OFF button. There is not. You can go to the cellar and trip the breaker I guess? Otherwise, you better have reasonably warm and dry fingers (it can deal with a bit of moisture and chill, but has limits similar to trying to use a phone in the rain)

Gotta say it looks sleek though, when it's free of fingerprints and other usage marks

I love technology

encom•7mo ago
Your post triggered a deep seething hatred in me of stoves with touch anything. Last place I lived (rented) was a stove with touch buttons on the stove top, which was itself a glass surface. Never mind that it beeped annoyingly on every input. Operating it with wet hands was impossible. A common situation in a kitchen. But the worst was that, if anything boiled over, the touch buttons went bananas, and usually ended up shutting everything off. Adding further annoyance and inconvenience to the situation. Because I had limited countertop space, I often wanted to use the stove as a working surface (when not in use, obviously), but it had some godforsaken detector that registered when something was put on top of (or near) the buttons (capacitive or not), and it would continuously beep until you moved it. I mean I kind of get it as a safety feature, but on the other hand I also want to override the machine, tell it to fuck off because I'm in control of the situation, and we wouldn't even have this problem in the first place, if it wasn't for this touch garbage.

Whoever designed that thing should be fed feet first into a wood chipper.

dbtc•7mo ago
Try using a fruit?
Aachen•7mo ago
Lol! I'm picturing labelling an emergency banana as such

We don't normally have fruit laying around but maybe I can find something conductive and finger sized and keep that around. Good idea!

It'll be a small challenge though: the stove checks that you decisively press it with an object of the right size: changing size or position, like when pressing down slowly or shifting accidentally, doesn't work; and random metal objects, spilled liquids, or light touches can't change your settings either. It also needs to stay put for a second before anything happens (not annoying at all) or 3 seconds for the on/off button. I gotta give it some credit here for the efforts they took to make this a usable and safe product. It just can't work when there's any liquid anywhere near the button you're wanting, including the off button, you have to dry it first

qwertox•7mo ago
You could strap a band with a strong magnet around your tummy and have an IMU sensor below your mattress. It was a project I started and sampled it at 1 Hz, multisampled with min/max/avg, but I never did anything with the data.

Looking at the real-time stream the breathing was noticeable, at 2Hz it would probably be very useful, if you have the dedication to write the tools to analyze the data.

I was thinking about doing this with a fanny pack where I put the sensor and battery pack in the fanny pack and a strong magnet at the opposite side of the strip in order to measure my breathing frequency during excercising.

jackschultz•7mo ago
I've been curious about what the best way to recording breathing rates with wearables would be. Thought was a chest strap with springs to measure tension with higher tension being air in lungs. But you're talking about a different way. How does the magnet work to get rates? I'd want something that can get rates and volumes from mouth vs nasal and also tell which vent the air in coming into the lungs from. Probably a case of how much intrusion you want vs how intricate and correct the data is.
CrimsonCape•7mo ago
I believe that I and everyone "vibrate at a certain frequency" which I define loosely as the qualitative electrical/emotional impulses that drive daily mood and physiology. Like the baseline is a smooth sine wave of calmness. Some people seem agitated all the time, and I guarantee their frequency is vibrating at a higher hertz.

Driving home from work, I get at least 2-3 "shocks" when other drivers cause close calls. I flinch, get a surge of adrenaline, and have to breathe to calm down. My sine wave is disturbed. Let's say a driver swerved close to my vehicle and I flinch and swerve away.

The next day, a driver drifts close and I instinctively get a shock, flinch, and swerve away. I didn't intend to be jumpy and nervous, but apparently my electrical system is still "echoing" from the day before.

At work, I experience anxiety, and it's a "softer" shock, but the long term result is nervousness, twitching, holding my breath in anticipation (of an attack that never comes), feelings of dread.

People talk about fixing upset emotional states and psychology, but in thinking about this, I characterize my own problems as needing my electrical system tuned-up.

How often did a farmer 1000 years ago get adrenaline dumps from fast-twitch motor neurons as he zoomed 80mph down the highway? And yet now it's literally all day. Vehicle noise at 4am, jump awake. Phone rings, jump and flinch. Driving, etc.

I don't think we look often enough at the physiology of stress from the perspective of the electrical signals generated by the nervous system. It seems like all kinds of problems come from it. To the article's point, I know my breathing has been affected from stress and tensions. I don't think i'm particularly unhealthy, so I think a lot of people could relate to feeling "not-unhealthy" but also really twitchy and disturbed from stress and tension.

In my thinking about this, fitness and health come from creating the electrical impulses in a steady, predictable way (i.e. walking, lifting) such that the electrical pathway can remember it's baseline frequency and "strengthen" the good frequency. And hopefully smooth-out the peaks and valleys of the signal interruptions caused by stresses.

dbtc•7mo ago
I wonder if one were to use e.g. a gardening metaphor to conceptualize their perceived inner state, rather than an electricity metaphor, all things being otherwise the same, would their thoughts calm down and nervousness subside?

This is a hypothesis.

It might be true that electrical signals and magnetic frequencies define something fundamental about our physical reality, but don't underestimate utilitarian power of imagination and metaphor.

Think about trees, feel better.

NoPicklez•7mo ago
Next up, sensors can now detect and know exactly who farted.
vismit2000•7mo ago
Related: Detection from breathing audio data - A Three-Fold Machine Learning Approach for Detection of COVID-19 from Audio Data: https://link.springer.com/chapter/10.1007/978-3-030-86970-0_...
Noelia-•7mo ago
I never realized that the way we breathe could be as unique as a fingerprint and even used to identify us. I used to think of deep breathing as just a way to calm myself down, but now it seems like it reflects more than just emotions. It is part of who we are.

If breathing can really be used to detect health or mental states in the future, that sounds promising. But it also makes me a bit uneasy. If even our breath can be tracked, is that one more doorway to being monitored?