Add Yahoo as a preferred source to see more of our stories on Google. Photo: YouTube If you use a Master combination lock at the gym, you might need to reconsider it after reading this post. Because ...

Long, long ago we covered a method to crack a Master lock in about 30 minutes or less. Here’s a revival of the same method but now the instructions to retrieve the combination are in info-graphic ...

Numerical combination locks have kept our stuff safe for hundreds of years. (Thanks, numerical combination locks!) But why not mix things up a little bit? How about a lock with a cheat code, instead ...