A tool cabinet that tells you when tools are missing.

A tool cabinet could be produced that has sensitive scales that knows the weight of the tools in the cabinet, each tool could be weighed in or checked in or the Tool Cabinet could be supplied new with Tools in it, so the Electronic interface or a Bluetooth App on your phone can tell you what tools are missing or most likely what tools are missing. The cabinet could have a light on it that turns Red when tools are missing or being used and not in the cabinet. The Cabinet could have a green light...