TechBrief — تازه‌ترین اخبار فناوری

Elon Musk misled Twitter investors while trying to get out of acquisition, jury says

At the time, Musk had tweeted that Twitter had too many bots, which is why he was trying to renege on his commitment to buy the company.

Jury finds Musk owes damages to Twitter investors for his tweets

Verdict, while not a complete loss, could still cost him billions.

Show HN: Red Grid Link – peer-to-peer team tracking over Bluetooth, no servers

I go on a lot of backcountry trips where I barely get cell service. If my group splits, nobody knows knows where anyone is until you regroup at camp or at your destination. You can buy Garmin radios or try to set up an ATAK, but ATAK is Android-only and assumes you have a TAK Server running somewhere to make use of all of the functionality. Cool tools themselves, but expensive to set up correctly. I just wanted two iPhones to share their location directly over Bluetooth when cell coverage was lacking.

Red Grid Link does that. Start a session, and anyone nearby running the app shows up on your offline map. When they walk out of range their marker stays as a "ghost" that slowly fades.

The hard part was making sync reliable over BLE. The connections drop all the time. Someone turns a corner, walks behind a vehicle, whatever. I built a CRDT sync layer (LWW Register + G-Counter) so there's never merge conflicts. Each update is just under 200 bytes (from what I have tested so far). When a user/teammate disappears the app does exponential backoff from 2 to 30 seconds before giving up and marking them as a ghost.

Everything is encrypted (AES-256-GCM, ECDH P-256 key exchange per peer pair). Sessions can require a PIN or QR code to join. It also offers offline topo maps with MGRS grid coordinates, same system as in my other app, Red Grid MGRS.

The app is free, and I'm looking for some honest feedback from other real-world users. Let me know if you have any questions!

Comments URL: https://news.ycombinator.com/item?id=47461529

Points: 6

# Comments: 0

Ghostling

Article URL: https://github.com/ghostty-org/ghostling

Comments URL: https://news.ycombinator.com/item?id=47461378

Points: 12

# Comments: 1

You're likely already infected with a brain-eating virus you've never heard of

Fatal brain infection was thought to be from profound immune suppression. Not anymore.

Show HN: We built a terminal-only Bluesky / AT Proto client written in Fortran

Yes, that Fortran.

Comments URL: https://news.ycombinator.com/item?id=47461321

Points: 20

# Comments: 18

There Aren’t a Lot of Reasons to Get Excited About a New Amazon Smartphone

The company is reportedly building a new AI-powered mobile device. If Amazon follows through on the plan, experts warn it would be next to impossible to break into a crowded market.

An automated moderation error left Tumblr users panicked

Tumblr users were left scrambling on Wednesday after dozens of accounts were banned in the same afternoon by an automated system. Numerous users contacted The Verge about the incident, claiming that the wave of bans disproportionately seemed to impact accounts run by users who identify as trans women, many of whom were given no specific […]

Trump takes another shot at dismantling state AI regulation

The Trump administration on Friday unveiled its new legislative blueprint for AI regulation, and the seven-point plan includes a clear message: The federal government should avoid many AI regulations beyond a set of child safety rules, and it should bar states from messing with the "national strategy to achieve global AI dominance." The plan advises […]

Microsoft is ending the Windows Update nightmare — and letting you pause them indefinitely

In 2015, Microsoft decided that you shouldn't be in control of updating your PC anymore. At first, it seemed like a good idea to keep malware at bay - but soon, users discovered their computers were automatically shutting down and erasing work in the middle of the day. Then, Microsoft abused its power to install […]