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Zram as Swap

https://wiki.archlinux.org/title/Zram#Usage_as_swap
1•seansh•2m ago•0 comments

Green’s Dictionary of Slang - Five hundred years of the vulgar tongue

https://greensdictofslang.com/
1•mxfh•4m ago•0 comments

Nvidia CEO Says AI Capital Spending Is Appropriate, Sustainable

https://www.bloomberg.com/news/articles/2026-02-06/nvidia-ceo-says-ai-capital-spending-is-appropr...
1•virgildotcodes•6m ago•2 comments

Show HN: StyloShare – privacy-first anonymous file sharing with zero sign-up

https://www.styloshare.com
1•stylofront•8m ago•0 comments

Part 1 the Persistent Vault Issue: Your Encryption Strategy Has a Shelf Life

1•PhantomKey•12m ago•0 comments

Show HN: Teleop_xr – Modular WebXR solution for bimanual robot teleoperation

https://github.com/qrafty-ai/teleop_xr
1•playercc7•14m ago•1 comments

The Highest Exam: How the Gaokao Shapes China

https://www.lrb.co.uk/the-paper/v48/n02/iza-ding/studying-is-harmful
1•mitchbob•19m ago•1 comments

Open-source framework for tracking prediction accuracy

https://github.com/Creneinc/signal-tracker
1•creneinc•21m ago•0 comments

India's Sarvan AI LLM launches Indic-language focused models

https://x.com/SarvamAI
2•Osiris30•22m ago•0 comments

Show HN: CryptoClaw – open-source AI agent with built-in wallet and DeFi skills

https://github.com/TermiX-official/cryptoclaw
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ShowHN: Make OpenClaw respond in Scarlett Johansson’s AI Voice from the Film Her

https://twitter.com/sathish316/status/2020116849065971815
1•sathish316•27m ago•2 comments

CReact Version 0.3.0 Released

https://github.com/creact-labs/creact
1•_dcoutinho96•28m ago•0 comments

Show HN: CReact – AI Powered AWS Website Generator

https://github.com/creact-labs/ai-powered-aws-website-generator
1•_dcoutinho96•29m ago•0 comments

The rocky 1960s origins of online dating (2025)

https://www.bbc.com/culture/article/20250206-the-rocky-1960s-origins-of-online-dating
1•1659447091•34m ago•0 comments

Show HN: Agent-fetch – Sandboxed HTTP client with SSRF protection for AI agents

https://github.com/Parassharmaa/agent-fetch
1•paraaz•36m ago•0 comments

Why there is no official statement from Substack about the data leak

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8•witnessme•40m ago•1 comments

Effects of Zepbound on Stool Quality

https://twitter.com/ScottHickle/status/2020150085296775300
2•aloukissas•43m ago•1 comments

Show HN: Seedance 2.0 – The Most Powerful AI Video Generator

https://seedance.ai/
2•bigbromaker•46m ago•0 comments

Ask HN: Do we need "metadata in source code" syntax that LLMs will never delete?

1•andrewstuart•52m ago•1 comments

Pentagon cutting ties w/ "woke" Harvard, ending military training & fellowships

https://www.cbsnews.com/news/pentagon-says-its-cutting-ties-with-woke-harvard-discontinuing-milit...
6•alephnerd•55m ago•2 comments

Can Quantum-Mechanical Description of Physical Reality Be Considered Complete? [pdf]

https://cds.cern.ch/record/405662/files/PhysRev.47.777.pdf
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Kessler Syndrome Has Started [video]

https://www.tiktok.com/@cjtrowbridge/video/7602634355160206623
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Complex Heterodynes Explained

https://tomverbeure.github.io/2026/02/07/Complex-Heterodyne.html
4•hasheddan•58m ago•0 comments

MemAlign: Building Better LLM Judges from Human Feedback with Scalable Memory

https://www.databricks.com/blog/memalign-building-better-llm-judges-human-feedback-scalable-memory
1•superchink•1h ago•0 comments

CCC (Claude's C Compiler) on Compiler Explorer

https://godbolt.org/z/asjc13sa6
2•LiamPowell•1h ago•0 comments

Homeland Security Spying on Reddit Users

https://www.kenklippenstein.com/p/homeland-security-spies-on-reddit
37•duxup•1h ago•9 comments

Actors with Tokio (2021)

https://ryhl.io/blog/actors-with-tokio/
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Can graph neural networks for biology realistically run on edge devices?

https://doi.org/10.21203/rs.3.rs-8645211/v1
1•swapinvidya•1h ago•1 comments

Deeper into the shareing of one air conditioner for 2 rooms

1•ozzysnaps•1h ago•0 comments

Weatherman introduces fruit-based authentication system to combat deep fakes

https://www.youtube.com/watch?v=5HVbZwJ9gPE
3•savrajsingh•1h ago•0 comments
Open in hackernews

HeartWatch: A Proactive Child Safety System

4•Richard_Damge•5mo ago
Overview HeartWatch is a real-time child safety monitoring concept that combines biometric heart rate data, GPS tracking, and ambient audio into a single, proactive system. It's designed to help parents, guardians, and institutions detect early signs of distress or danger in children and respond with speed and confidence.

Core Features Proactive Heart Rate Monitoring Integrates with a wearable device (smartwatch, band, etc.) to continuously monitor a child's heart rate. The app uses advanced algorithms to recognize patterns that indicate fear, panic, or physical distress, triggering immediate alerts for the guardian.

  Live GPS Tracking with Geofencing
Provides live, real-time location tracking. Guardians receive instant alerts when a child enters or exits predefined "safe zones" such as home, school, or a designated play area.

  Ambient Audio Capture
When a heart rate anomaly is detected or a geofence is breached, the app can automatically and securely record a short audio clip. This feature helps guardians assess the situation by capturing potential verbal distress or threats in the child's immediate surroundings.

  One-Tap Emergency Response
In an emergency, guardians can instantly forward the child's live location, biometric data, and any captured audio to emergency services with a single tap. The system could also include an optional panic button on the child's wearable for immediate alerts.

  Privacy and Security
Privacy is at the core of the design. All features are strictly guardian-controlled. Audio is only captured in response to a potential threat, and all data is secured with end-to-end encryption.

Target Users: Parents of children aged 4–14. Guardians of children with health conditions or anxiety. Schools and daycares seeking an advanced safety tool. Child welfare agencies and programs for at-risk youth.

Potential Integrations & Future Directions:

Integrate with existing wearables like Apple Watch, Fitbit, and Garmin.

Develop a custom wearable specifically designed for children (e.g., the "HeartWatch Band"). Expand to other biometric data, such as skin temperature or stress levels.

Declaration of Free Use: I release this concept, HeartWatch, into the public domain. Anyone is free to build, adapt, or deploy it in part or whole — with no need for permission, credit, or compensation. My sole intention is to see this concept applied to enhance child safety and preserve lives. HeartWatch: A Proactive Child Safety System by Richard Damge is marked CC0 1.0. To view a copy of this mark, visit https://creativecommons.org/publicdomain/zero/1.0/

Comments

allegoric•5mo ago
I think this IP may have already been copyrighted:

https://en.wikipedia.org/wiki/Arkangel_(Black_Mirror)

OnACoffeeBreak•5mo ago
What's the method for connecting the watch to the Internet?

Garmin Bounce [0] has some of the features on your list and many more (like on-watch LTE). I don't believe it includes the ability to use heart rate and stress levels to trigger automatic alerts. I have no first-hand knowledge in this field, but I would imagine it would be very difficult to implement this without many false positives especially for kids in the day care and school settings because excitement and play likely look very similar to anxiety and distress from the point of view of the heart rate sensor.

0: https://www.garmin.com/en-US/p/714945/pn/010-02448-02/

Richard_Damge•5mo ago
False Positives can be mostly mitigated using historical data. If the child is consistently meeting alert criteria at a specific time (ie. Mon-Fri at 1300-1330 for Recess), alert is logged but no notification sent, unless toggled otherwise. The real challenge is the power consumption. Consistent monitoring burns a lot of power, someone smarter than me should figure it out.