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Many thanks to my ex for inspiring my new MacOS app, Someone Was Here.

It takes a photo of whoever uses your Mac while you're away, whether you left it unlocked or they know your password, and sends their photo to your iPhone if the face isn't yours.

I built Someone Was Here as a menu bar app making use of Apple Vision and a local face recognition run via Core ML. It all runs locally on your Mac with no tracking or ads.

Real-time remote alerts are available via one-time $4.99 lifetime purchase via the free companion iPhone/iPad app, Pushover, ntfy, Telegram or a webhook.

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Show HN: Someone Was Here – Find out who used your Mac while you were away

Too many men suffering in silence, national health report finds (Canada)

Payments Canada announces launch of Canada's Real-Time Rail (RTR) payment system

Our Smallest, Most Efficient Model: Muse Ember

Claude Fable 5.2 and Mythos 5.2

DeepX claims inference up to 100B parameters at less than 5 W

Infineon marks innovation milestone with 300mm power silicon carbide wafer

Fold Epic Paper Airplanes

Magenta solar panels may be agrivoltaics' cleverest trick yet

Show HN: MeowDisplay Is iPhone Mirroring, but in Reverse

Show HN: Every satellite that passed over any place this week, and its photos

Y/N (YC S23) is hiring a growth lead to distribute superhuman A.I. storytelling

Show HN: DBDelve – Open-Source DB Client Made with Rust and GPUI

Is Opus 5.5 nerfed? Thinking patterns changed on November 3

Zebkit – Chromium as an embeddable library

When will this stop? The Raspberry Pi 5 16GB SBC now sells for $385

What is malloc doing, anyway?

Going back two years on Hacker News is like entering another, better universe

A primer on GPUs and kernel optimization

Show HN: Recalc – Spreadsheet where cells can be Claude Code or Codex terminals

Show HN: My daily word puzzle Jointter revisited

On Being an Engineer in 2026

Pigshell: Unix the Web

Cryptocurrency lawsuit: Ethereum Foundation required "suicide pledge"

Show HN: Someone Was Here – Find out who used your Mac while you were away

The Qlobe: Rotating Quine (2010)

E-means: 10x faster k-means at equal loss

Fun things to do with your VM/370 CE machine – Fun with big computers

Try Gleam

Children of Men: The future is a mirror for the present

The Web Is More Than Enough