Joe Grand - Hacking a Samsung Galaxy for $6,000,000 in Bitcoin!?
www.youtube.com/watch?v=icBD5PiyoyI

Joe Grand - How I hacked a hardware crypto wallet and recovered $2 million
www.youtube.com/watch?v=dT9y-KQbqi4

EEVblog - How Secure Are Electronic Safe Locks?
www.youtube.com/watch?v=HxQUKAjq-7w