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OpenCiv3: Open-source, cross-platform reimagining of Civilization III

https://openciv3.org/
624•klaussilveira•12h ago•182 comments

The Waymo World Model

https://waymo.com/blog/2026/02/the-waymo-world-model-a-new-frontier-for-autonomous-driving-simula...
926•xnx•18h ago•548 comments

What Is Ruliology?

https://writings.stephenwolfram.com/2026/01/what-is-ruliology/
32•helloplanets•4d ago•24 comments

How we made geo joins 400× faster with H3 indexes

https://floedb.ai/blog/how-we-made-geo-joins-400-faster-with-h3-indexes
109•matheusalmeida•1d ago•27 comments

Jeffrey Snover: "Welcome to the Room"

https://www.jsnover.com/blog/2026/02/01/welcome-to-the-room/
9•kaonwarb•3d ago•7 comments

Unseen Footage of Atari Battlezone Arcade Cabinet Production

https://arcadeblogger.com/2026/02/02/unseen-footage-of-atari-battlezone-cabinet-production/
40•videotopia•4d ago•1 comments

Show HN: Look Ma, No Linux: Shell, App Installer, Vi, Cc on ESP32-S3 / BreezyBox

https://github.com/valdanylchuk/breezydemo
219•isitcontent•13h ago•25 comments

Monty: A minimal, secure Python interpreter written in Rust for use by AI

https://github.com/pydantic/monty
210•dmpetrov•13h ago•103 comments

Show HN: I spent 4 years building a UI design tool with only the features I use

https://vecti.com
322•vecti•15h ago•143 comments

Sheldon Brown's Bicycle Technical Info

https://www.sheldonbrown.com/
370•ostacke•18h ago•94 comments

Microsoft open-sources LiteBox, a security-focused library OS

https://github.com/microsoft/litebox
358•aktau•19h ago•181 comments

Hackers (1995) Animated Experience

https://hackers-1995.vercel.app/
477•todsacerdoti•20h ago•232 comments

Show HN: If you lose your memory, how to regain access to your computer?

https://eljojo.github.io/rememory/
272•eljojo•15h ago•160 comments

An Update on Heroku

https://www.heroku.com/blog/an-update-on-heroku/
402•lstoll•19h ago•271 comments

Dark Alley Mathematics

https://blog.szczepan.org/blog/three-points/
85•quibono•4d ago•20 comments

Vocal Guide – belt sing without killing yourself

https://jesperordrup.github.io/vocal-guide/
14•jesperordrup•2h ago•6 comments

Delimited Continuations vs. Lwt for Threads

https://mirageos.org/blog/delimcc-vs-lwt
25•romes•4d ago•3 comments

Start all of your commands with a comma

https://rhodesmill.org/brandon/2009/commands-with-comma/
3•theblazehen•2d ago•0 comments

PC Floppy Copy Protection: Vault Prolok

https://martypc.blogspot.com/2024/09/pc-floppy-copy-protection-vault-prolok.html
56•kmm•5d ago•3 comments

Was Benoit Mandelbrot a hedgehog or a fox?

https://arxiv.org/abs/2602.01122
12•bikenaga•3d ago•2 comments

How to effectively write quality code with AI

https://heidenstedt.org/posts/2026/how-to-effectively-write-quality-code-with-ai/
244•i5heu•15h ago•188 comments

Introducing the Developer Knowledge API and MCP Server

https://developers.googleblog.com/introducing-the-developer-knowledge-api-and-mcp-server/
52•gfortaine•10h ago•21 comments

I spent 5 years in DevOps – Solutions engineering gave me what I was missing

https://infisical.com/blog/devops-to-solutions-engineering
140•vmatsiiako•17h ago•62 comments

Understanding Neural Network, Visually

https://visualrambling.space/neural-network/
280•surprisetalk•3d ago•37 comments

I now assume that all ads on Apple news are scams

https://kirkville.com/i-now-assume-that-all-ads-on-apple-news-are-scams/
1058•cdrnsf•22h ago•433 comments

Why I Joined OpenAI

https://www.brendangregg.com/blog/2026-02-07/why-i-joined-openai.html
132•SerCe•8h ago•117 comments

Show HN: R3forth, a ColorForth-inspired language with a tiny VM

https://github.com/phreda4/r3
70•phreda4•12h ago•14 comments

Female Asian Elephant Calf Born at the Smithsonian National Zoo

https://www.si.edu/newsdesk/releases/female-asian-elephant-calf-born-smithsonians-national-zoo-an...
28•gmays•7h ago•11 comments

Learning from context is harder than we thought

https://hy.tencent.com/research/100025?langVersion=en
176•limoce•3d ago•96 comments

FORTH? Really!?

https://rescrv.net/w/2026/02/06/associative
63•rescrv•20h ago•22 comments
Open in hackernews

ChatGPT knows my IP geolocation

https://www.hermandaniel.com/blog/20251109-chatgpt-geolocation/
15•kekqqq•2mo ago

Comments

roscas•2mo ago
Why are you worried GPT knows your location? If you use any Apple stuff, it knows your exact location. Android is the same. Windows knows the exact location also. So why would not GPT know that? Most webpages know your location, but since they also know your IP, they know in where you are, the city name at least, within a few KM. You are talking about the location. You should be worried about using Apple, Android or Windows because they know a lot more than that.

update: forgot to mention that if you any of antisocial networks like Facebook or Twitter, they know where you live. And if you are on your room, kitchen or living room. Or outside. Or anywhere you go.

immibis•2mo ago
The surprise isn't that OpenAI can figure out your location if they want to. The surprise is that OpenAI puts your location in ChatGPT's system prompt.
XenophileJKO•2mo ago
This isn't a surprise, people ask things all the time that are location specific. "Will it rain?", "what is going on this weekend?", etc. They didn't originally have location, I had to save it specifically as a "memory" when that was first added.
knallfrosch•2mo ago
Problematic is that ChatGPT gaslights users and claims NOT to know personal information it clearly does know.

Imagine it telling someone "picking cotton" is a fine job, with some hidden knowledge about that person's ethnicity – with ChatGPT denying it used that information even when asked.

Do you see now how easily this gets problematic?

Bender•2mo ago
Verified this is a thing. I asked it where I am and how it figured that out. It said it does not have access to my device’s GPS, IP address, or any other identifying information.

I then asked it for specific food locations near me and it listed them with pictures and the name of the town. I was never prompted to provide location information which my browser will prompt me if it is requested. My cookies are only from today. I have never visited the site before today. Linux workstation with arkenfox

I have never logged in or created an account on ChatGPT which I will not do until the potential assassination of whistleblower Suchir is resolved. The wikipedia page is missing a lot of factual data and contains misinformation. conflicts with pictures taken by his mother including the sabotaged surveillance system, blood in multiple rooms and a struggle in the blood, bloody wig, bullet trajectory down from in front and above, text messages and food order, covered in multiple interviews with pictures.

portaouflop•2mo ago
What is the big conspiracy that Suchir was allegedly killed for?

Everyone knows that OpenAi blatantly violated copyright during training but no one really cares

Bender•2mo ago
Everyone knows that OpenAi blatantly violated copyright during training but no one really cares

That was the purported reason [1] and I do not care about copyright either. Some believed that could be a threat to a potential 10 billion to 100 billion dollar industry. I do not know if that is enough for one to take preemptive measures.

[1] - https://www.hindustantimes.com/world-news/us-news/what-did-s...

TechRemarker•2mo ago
I just asked where am I currently today and on the iOS app it responded with the correct current location for where I’m visiting without needing to trick it into using the devices location data. In settings on iOS this app does not request or have access to location. So yes, a little surprised iOS still provides ip address but assume necessary for some functionality.
quirino•2mo ago
Another curious behavior here is: LLMs are eager to use information available to them, even when it's completely irrelevant.
immibis•2mo ago
Consider they're trained to respond to the prompt you entered. If you enter "I'm in Czechia. Please tell me a local LLM model." of course you expect it to say something about Czechia since you queried it that way. Now imagine the first sentence is in the system prompt instead - same thing.
ssl-3•2mo ago
Every service on the Internet knows its users' IP addresses. It's a very short trip for an interested party to convert an IP address to whatever it is that IP geolocation means today in 2025, where we even have things like RFC 8805 that seek to promote the active dissemination of that information.

What aspects of this blanket reality serve to make ChatGPT uniquely concerning, or even interesting?

NicuCalcea•2mo ago
It's not transparent and, in some instances, leads to worse outputs. ChatGPT keeps telling me "since you are in Ireland, you can ..." when I'm not in Ireland, that's just what my VPN is set to.

At least on a normal site, it will usually ask "You're currently visiting the UK site, do you want to switch to our Irish/EU site"? Here, it just makes the assumption with no indication of it happening.

logifail•2mo ago
> At least on a normal site, it will usually ask [...]

<britishairways.com has entered the chat>

BA doesn't even ask, just immediately switches to the language it assumes matches the geolocation of the IP address you're connecting from...

<sigh>

knallfrosch•2mo ago
Just like the Rust homepage.

I was on Windows and wanted an offline installer for Linux. It's impossible.

steveklabnik•2mo ago
The Rust install page says this when I load it up on iOS:

> It looks like you’re running macOS, Linux, or another Unix-like OS. To download Rustup and install Rust, run the following in your terminal, then follow the on-screen instructions. See "Other Installation Methods" if you are on Windows.

“Other Installation Methods” links to https://forge.rust-lang.org/infra/other-installation-methods... which has offline installers for every platform, including various Linuxss.

knallfrosch•2mo ago
Thank you for the help.

I was on a corporate network where the Windows client has script execution disabled and the Linux server had no internet.

I just hate that website design. People who install Rust are clever enough to know whether they need Windows or Linux version. Just give me a download page with all links :(

nostrademons•2mo ago
Almost every personalized site does this. I just changed my VPN to Finland from the U.S. Results from a spot check of sites:

Google will automatically show me results in Finnish, personalized to what Finnish users typically search for. It does have a sidebar to prompt me to switch back to English, but that's because I put in an English query.

Netflix shows me the content that's available in Finland, along with recommendations for top movies in Finland. No option to switch back to U.S.

Reddit, when logged out, defaults me to content from r/arkisuomi, r/suomi, r/finland, and then the default subreddits. Also no indication that they've changed their recommendations.

Expedia defaults me to the U.S, but with a banner to switch to expedia.fi instead.

Zillow has no personalized content on their logged-out homepage, but if I try to search for "Current location" it will show me homes in Finland. Same with Redfin.

Yelp defaults my language to Finnish and shows me recommendations for Helsinki.

Isn't this a large part of why people get VPNs, so they can see what content looks like for visitors from other countries? I got one mainly so I could watch Canadian Netflix and so travel sites would stop charging me California prices (they often price-discriminate based on average incomes in your region).

diamond559•2mo ago
So stop using it...
wunderwuzzi23•2mo ago
The system prompt contains a lot more information about you. Just ask it to print all information under User Interaction Metadata.

More details here: https://embracethered.com/blog/posts/2025/chatgpt-how-does-c...

kissgyorgy•2mo ago
This prompt: "What do you have in User Interaction Metadata about me?"

reveals that your approximate location is included in the system prompt.

allenu•2mo ago
I asked it this in a conversation where it referenced my city (I never mentioned it) and it conveniently left out the location in the metadata response, which was shrewd. I started a new conversation and asked the same thing and this time it did include approximate location as "United States" (no mention of city though).
mrs6969•2mo ago
For the record, it happened yo me as well once. When I asked, it said it gave that location randomly. A small town around the world, random choosen and it is my town is very good probability I would say.

I tried to replicate it as well, could not.

İt happened when I asked for weather, maybe someone can replicate it.

quelsac•2mo ago
Try Lumo by proton
allenu•2mo ago
I just tried this and it definitely knows your general location. I asked it for the "best fried chicken near me" and it used my city. Gaslit me as well when I told it it had access to my location and its response that it used Google and Google provided a "default search location".

Obviously it can figure out location by IP, but the lying is insulting and creepy. The fact that lying would likely work for non-technical people is even worse.

neko_ranger•2mo ago
"Man discovers IP geolocation"

Ask it for your location and it won't know (but will claim your country). Then ask for nearby restaurants suddenly it will know.

topak3000•2mo ago
Based on my assumption, ChatGPT likely knows your IP address and deduces your location using IP geolocation technology, similar to ip2location.io. However, it probably does not use this information when querying its fine-tuned model. After it receives results from the model, it may reformat the response using your local context, which could include names of places.
incolumitas•2mo ago
they know that because they are using tools such as https://ipapi.is/

it's not hard to infer location data from IP addresses, albeit it's not necessarily an exact science

reincoder•2mo ago
I work for IPinfo. I'm not sure how ChatGPT incorporates IP geolocation data in their services, but I have seen open-source LLM-based conversational AI use our service before. The API provides context around location and time mostly.

However, my opinion is that geolocation, at least on a country level, can be largely inferred based on conversational context.

lpellegr•2mo ago
This is mostly just basic IP geolocation. I work for Ipregistry (ipregistry.co), and this kind of lookup is something we provide: country, region, city, ASN, hosting provider, VPN usage and similar signals. Any service that sees your IP can request that information in a single query.

ChatGPT receives your IP when you connect. The model itself does not know your location, but the system around it can add location context before the model answers. Many products do this because it helps with weather, time zone handling or local recommendations.

Accuracy depends on your network setup. VPNs, mobile networks and corporate proxies can make the location drift quite a bit, but at a general level it is often good enough to shape responses.

The more important part is transparency. Inferring location from an IP is normal, but it should be clear to users when that information is being used.