Imgur user [Criand] has been hard at work on his own project made entirely out of paper, a combination lock that can hold a secret message (reddit post). The motivation for the project was as a ...

Combination locks, in particular (especially TSA-approved locks), are created to lock luggage shut while still allowing airport security staff to look inside without damaging the lock.

This allows you to retain your locker for the month of August (free) throughout the next rental term. You can also check out the video on how to open a combination lock. If you've followed the ...

Here’s a really fascinating circuit that implements a combination lock using relays and logic gates. Even with the schematic and written explanation of how it works we’re still left somewhat ...