3 ms·

That can trivially be done in software using any USB device at all. In fact, Tails has done it forever, and I bet other things have too. Total ripoff.

• lelandfe 5y ago
  https://www.buskill.in/buskill-laptop-kill-cord-dead-man-switch/ https://www.buskill.in/buskill-laptop-kill-cord-dead-man-swi...
• szszrk 5y ago
  Also magnetic usb cables are quite easily available now. You could use any tiny usb device and add magnetic feature to it for around $10 or so.