BusKill can trigger your laptop to lock, shutdown, or self-destruct if it’s physically separated from you.
It’s actually been around for a few years, but this was the first time it popped up in my feed.
BusKill can provide travellers peace-of-mind when logged into their bank account or social media from a café in Paris. BusKill can keep a journalist’s documents and their sources safe if they’re targeted by the political police.
It is probably also useful for activists, businesses, military, and intelligence operatives.
The intention to use a physical cable was a deliberate one, as otherwise Bluetooth or other wireless triggers could be thwarted.
It works on Windows, macOS, Linux, and even QubesOS.