I have heard many talk about having their chip truck tool boxes broken in to. At the TCIA Expo, Arbortech offers a security system for the cross box. If a door is pried open so far, the chip box strobe lights and back up alarm will sound. Arbortech has also put a back up battery, about the size of a motorcycle battery, inside the tool box that is wired to charge when the truck is running so that if someone disconnects the battery, there will still be power to operate the alarm system. You alarm the system with a separate key fob.