How a Hacker Fired a Locked Smart Gun Using Only Magnets

For those who can't watch Youtube with sound right now, TL;DR:

- overriding the signal (jamming) jams the gun

- same attack as against contactless car keys: capture and retransmit the signal key near the receiver (in this case: capture watch's signal and transmit near the gun)

- holding strong magnets to the side triggers the same mechanism as the gun would normally use to unlock itself after receiving the authorization signal