Most of us at one time or another has lost our keys and know the stress that it causes. Compounding things is the cost that comes with calling out a locksmith to replace all the locks on the windows and doors of your house. But what if you could change your locks simply by inserting another key? That’s just what the Matrix Key System designed by Australian locksmith, Stuart Webb, does. Inserting a new key into the lock effectively changes the lock, rendering the old key useless and saving the hassle and expense of calling a locksmith.