How to crack many Master Lock combinations in eight tries or less Gymnasium locker rooms may never be secure again, thanks to quick and easy hack.

The video shows how to open a standard four-digit bike combo lock by looking for the gaps between the numbers. Obviously you should only use this hack for your own lock (and not for stealing bikes).

Forgot your Master lock combo? Or want some incentive to not use a Master padlock? There’s a website for that. The video above from Samy Kamar shows how you can crack any Master combination lock ...