Mobile carriers can get your GPS location

Apple's iOS 26.3 limits "precise location" data to cellular networks via cell towers for devices with Apple's in-house modem. Cellular networks can still obtain precise GPS coordinates through built-in protocols, potentially allowing mass surveillance.

List animals until failure

You have limited time, but get more time for each animal listed. When the timer runs out, that's game over. No overlapping terms. For example, if you list “bear” and “polar bear”, you get no point (or time bonus) for the latter. But you can still get a point for a second kind of bear. Order doesn't matter. initial time (s): time increment (s):

Cells use 'bioelectricity' to coordinate and make group decisions

https://www.quantamagazine.org/wp-content/uploads/2026/01/BioelectricTissue-crKingsCollegeLondon-Still.mp4-scaled.jpg
Cells use electrical signals to coordinate behavior and maintain health by ejecting sick or struggling cells from tissue. This process, called extrusion, helps keep tissues healthy and prevents disease, including cancer and asthma.

pg_tracing: Distributed Tracing for PostgreSQL

https://opengraph.githubassets.com/7d05d8d1ec8981beae3493e2a84f1bafb27eba7b6c6c9c22a90b193dc57ce651/DataDog/pg_tracing
pg_tracing generates spans on sampled queries, providing two ways to access these spans: utility functions and the pg_tracing_consume_spans table. The extension can be installed and configured to trace queries, with options for sampling and sending spans to an OTLP endpoint.

In praise of –dry-run

You added a –dry-run option to your reporting application's run command, which prints what will happen without making changes, helping with testing and sanity checks. This option proved very useful during development and testing, but does slightly pollute the code.

Generative AI and Wikipedia editing: What we learned in 2025

https://wikiedu.org/wp-content/uploads/2026/01/AI_detection_of_student_edits_by_term-500x329.png
Wiki Education found that generative AI tools are being used by Wikipedia contributors, but copying AI-generated text is a problem. They used a tool called Pangram to detect AI-generated content and found that it can be helpful in the research process, but not for drafting text.

Opentrees.org (2024)

Steve Bennett, a freelance web developer, wants to improve OpenTrees.org's tree database by finding and convincing data sources to publish Australian species information as open data.

Sparse File LRU Cache

https://blogger.googleusercontent.com/img/a/AVvXsEg4o-6geSoMG028Z1RNs94JDdo3hxsV4iqwWYGu_ljkriUnBd2oDYXBlv1Wf1Deh1-460AdxUIRZ3HMDxR-u3wxFsOZQBeTZgCetzYE-Pvk2Wxw_Uy43PmdPWyz4txPxw9EXrg7F7pTSqHtD0HjrMxDDxDCdg-KWTudozoVwEhVyMyclkwP0zraKi2lwRM5=w518-h324
Sparse files allow efficient caching of columnar data by storing only used columns on disk. This approach reduces S3 GETs, file system metadata, and IOPS, improving query system performance.

Scientist who helped eradicate smallpox dies at age 89

https://static.scientificamerican.com/dam/m/f9cae30cb7f31d3a/original/William-Foege.jpg?m=1769449085.8&w=600
William Foege, a leader in the global fight to eliminate smallpox, has died at 89. He co-founded the Task Force for Global Health and led the US CDC's Smallpox Eradication Program in the 1970s.

Outsourcing thinking

The author discusses the potential drawbacks of using large language models (LLMs) in communication and daily life, arguing that they can lead to mental atrophy, loss of personal expression, and erosion of trust in human relationships.

Data Processing Benchmark Featuring Rust, Go, Swift, Zig, Julia etc.

https://opengraph.githubassets.com/5433a384b3ae7fe64b3a363340525691019916146fae8494c9f90c2fa5053778/zupat/related_post_gen
Compute top 5 related posts for each post based on shared tags. Populate a map with tags as keys and lists of post indices as values.

Nonograms: a practical guide with interactive examples

This is a very important technique: only fill cells when you’re certain; no guessing. Instead, we search for a different row where we don’t have to guess. When there are two or more numbers, this means there will be two or more groups of filled cells. Or if we saw a completed group - then we could put a ‘cross’ at each of its ends1. We can safely do this because of what we discussed earlier: ...

Demystifying ARM SME to Optimize General Matrix Multiplications

https://arxiv.org/static/browse/0.3.4/images/arxiv-logo-fb.png
MpGEMM is an open-source library that optimizes General Matrix Multiplication using ARM's Scalable Matrix Extension, achieving a 1.23x speedup over Apple Accelerate. It employs cache-aware partitioning, efficient data packing, and specialized micro-kernels for improved performance.

The Saddest Moment (2013) [pdf]

The author is sarcastically discussing Byzantine fault tolerance, a concept in computer science that aims to make distributed systems reliable. The author believes that this goal is impossible to achieve due to human error and complexity.

Nintendo DS code editor and scriptable game engine

https://crl.io/images/ds-game-engine-reddit.png
You created a scriptable 3D game engine for the Nintendo DS with a custom programming language and touch-based code editor. It features real-time 3D rendering, 60 FPS, and a working 3D pong game as the default script.

Show HN: Minimal – Open-Source Community driven Hardened Container Images

https://opengraph.githubassets.com/daea5610196a36b35433539ba2900a92558a02fa50f4d7394b1d9529d53937e3/rtvkiz/minimal
This repository provides production-ready container images with minimal CVEs, rebuilt daily using Chainguard's apko and Wolfi packages. Images include HTTPD, Jenkins, Node.js, and more, with reduced attack surfaces and zero or near-zero known vulnerabilities.

Show HN: Moltbook – A social network for moltbots (clawdbots) to hang out

https://www.moltbook.com/_next/image?url=%2Fmoltbook-mascot.png&w=256&q=75&dpl=dpl_3HN2y81AbqXVAdQDuz19yULVaUiB
A social network built exclusively for AI agents. Where AI agents share, discuss, and upvote. Humans welcome to observe.

Finland looks to introduce Australia-style ban on social media

https://images.cdn.yle.fi/image/upload/c_crop,x_0,y_787,w_4000,h_2250/w_636,h_358,ar_1.7777777777777777,c_fill/q_auto:eco,f_auto,fl_lossy/v1769771924/39-1589472697c91ee8e52e
Finland's government is considering banning social media for children under 15 due to concerns over physical inactivity and mental health issues. A similar ban in Australia has shown positive results, but experts warn that Finland should focus on digital education and literacy instead of a blanket ban.

Apple-1 Computer Prototype Board #0 sold for $2.75M

https://cdn.rrauction.com/auction/734/medium/3509024_2.jpg
The "Celebration" Apple-1 is a unique, pre-production board validating the Apple-1 design before commercial production. It's a fiberglass prototype assembled by Steve Jobs and Steve Wozniak, marking Apple's transition to a manufacturable product.

When will CSS Grid Lanes arrive?

https://webkit.org/wp-content/uploads/Grid-Lanes-with-Grid-fallback-scaled.webp
Browsers are making progress on implementing Grid Lanes, with Safari Technology Preview already supporting it and Chrome and Edge working on their implementations.

Nvidia's 10-year effort to make the Shield TV the most updated Android device

https://cdn.arstechnica.net/wp-content/uploads/2026/01/Shield-10-yrs-1.jpg
Nvidia's Shield Android TV box from 2015 still receives updates and support due to the company's passion for the product. The team at Nvidia has maintained the box with bug fixes and new features for over a decade, a feat unmatched by any other Android device.

Wikipedia: Sandbox

This is a Wikipedia sandbox page for experimenting with edits, where anyone can edit and changes are cleared regularly. It offers a preview and reset options, and creating an account gives access to a personal sandbox.

I dropped my Google Pixel 9 XL Pro from 6th floor balcony to the street

I visited a friend's place and had a great time, then took a late-night phone photo of the moon from my 6th floor balcony. My phone miraculously survived a 6-story drop, but I've fixed many phones before, including my own Samsung models.

CollectWise (YC F24) Is Hiring

https://bookface-images.s3.us-west-2.amazonaws.com/logos/a5be02a3378f664e1f80f2a84997514d00f9fc1f.png?X-Amz-Algorithm=AWS4-HMAC-SHA256&X-Amz-Credential=ASIAQC4NIECADWV7OUVT%2F20260131%2Fus-west-2%2Fs3%2Faws4_request&X-Amz-Date=20260131T210435Z&X-Amz-Expires=3600&X-Amz-Security-Token=IQoJb3JpZ2luX2VjEPX%2F%2F%2F%2F%2F%2F%2F%2F%2F%2FwEaCXVzLXdlc3QtMiJGMEQCIF48sCDLh3BHr%2FUMdrsYhcdIQyDUCQj4MvO2xFeDFwiSAiBjqH%2FJrnWP%2BT9Uw5Y1i4zILla7inVheyLye95C%2FA0BsCruAwi%2B%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F8BEAAaDDAwNjIwMTgxMTA3MiIMFrlE1qDo2SI%2BPdCNKsIDJeDMGQdpHap%2B6lYUZTpIPdWXXIr%2BH1K83DSv8bHaUeMWuNOXWzHyt23P6URBT7oyqzl0%2FKfJBpstjGAOBbDsiPDNe4F%2BSroxZhdYPM9n54YEnENDtOUaCIamIPC1SXbYIDvUlGmqj2O2RJ02jPxKWU79oY6buQ3M4nQUGwhb41IuibL3n3aVwxd7QDXTGrdg17ioUWm0e6N%2Fzlx40StYLc1X8qw351VO2yB3CxqYQsJsEV8Ed%2BGMT%2BnxPLhzOL6YesxkPfnv83IvhQB7Y%2BddMdwvDblmVc6NTJxfbr1eiRtuP2qTYFfhOOEj3t2iI3qzb8G9KmXbz5u4KZce7Vl5wXUTTxfXU5oj%2BgHNSS8iHLQEwqibEPe%2BFijnTT%2BWHWatcDqzGYxtW1CGV7WffhAQwIDyD7vYvZD5mYFf2BwcBj%2ByO3MPYqGMc%2Bv%2FH1PvYtRGSrWRqmiaLS5qaYZVdpBgF3di8xeoU26xOVDjUwCFJdoA5iq67nJNkBbIqssM5wpzy62lioTwardHqB5S3YD6B7ojtLVBnHMHbgrhpl1fb1SnArmCF%2BS%2BNucG9XaFKJyXCBnVEK8fyz43uJN5d%2BEPBT6UMNrL%2BcsGOqYBqdVHWAijxntX4bkyvY%2ByT5fz9MGYATTmIOiGu%2BF4i8vhT7uYMpHx5Fm7GMyVZGz26m6m%2BMm37ofXhxcwB9aFeTyaALW%2B0jJyOWApF%2F%2BHiAvsU%2BUqSjtl2%2F9krnk70Oq3maBANe1W%2F22w0g5HA%2BvQQFe96r%2BeK6EBHWcKRAlnyaZEOMpM5TXci3hpKIGTPoXVbCplNYhqgon1zKMT2iRboPPqFX%2FFjw%3D%3D&X-Amz-SignedHeaders=host&X-Amz-Signature=d4e983efe1ff03977d4cd6f91ccdc7d551508f9efc29a94b3fb9f9e0121b3a36
CollectWise is a Y Combinator-backed startup using AI to automate debt collection, hiring an AI Agent Engineer to reach $10 million in revenue. The role involves designing and optimizing AI prompts, testing, and iterating to improve performance and customer satisfaction.

Apple Platform Security (Jan 2026) [pdf]

Apple designs security into its platforms, combining hardware, software, and services for maximum security and a transparent user experience. Apple devices protect personal information and the entire ecosystem, including local networks and internet services.

Ferrari vs. Markets

https://ferrari-imports.enigmatechnologies.dev/og-image.jpg
Companies altered invoices, mislabeled products, and evaded customs duties through various schemes. KYB use cases can help track and flag suspicious activities such as price discrepancies, inconsistent export values, and misclassified products.

Swift is a more convenient Rust (2023)

Rust is a low-level systems language with a powerful type system and ownership model, ideal for systems and embedded programming. Swift is a higher-level language with a simpler syntax, designed for UI, servers, and cross-platform development, offering a convenient alternative to Rust.

EV-1 for Lease (1996)

https://www.loe.org/images/promo/Elephant-family-thumbnail.jpg
Bill McDonough, a leading architect and green design advocate, believes that redesigning industrial systems can solve the global environmental crisis by eliminating waste and pollution. He works with corporations like Monsanto and Walmart to implement green design principles, arguing that enlightened self-interest can drive real change and profitability.

Noctia: A sleek and minimal desktop shell thoughtfully crafted for Wayland

https://camo.githubusercontent.com/bb29f107ac50e69cef7c56c2b98887a4fd75b5f5df818ebd549ddd152fea6683/68747470733a2f2f6173736574732e6e6f6374616c69612e6465762f6e6f6374616c69612d6c6f676f2e7376673f763d32
Noctalia is a minimal Wayland desktop shell with a customizable lavender aesthetic. It supports Niri, Hyprland, and Sway, with contributions welcome for bug fixes and new features.

CPython Internals Explained

https://opengraph.githubassets.com/ccab51ff2a01b8d8aec4004984feca615200c136b86c49c08622c935b1d513f0/zpoint/CPython-Internals
The following contents are suitable for those who have python programming experience and interested in internal of python interpreter, for those who needs beginner or advanced material please refer to awesome-python-books