I'm surprised at the lack of ranting about Tapplock. It's some of the worst dev work I have ever heard of.

A "Smart Lock" that used a finger print to unlock. The problem is, it would authenticate over http, the auth token it sent was just it's Mac address, the auth server allowed you to add yourself to other peoples locks and see their locations, etc. People made apps that would open any of these locks within 2 seconds. In addition, it can be taken apart with a screwdriver and unlocked.