A tool box or tool cabinet (hereafter: “tool box”) is provided with a locking mechanism having a locked condition in which it prevents access to tools within the tool box, and an unlocked condition in which it allows access to tools within the tool box. An electric motor has a rotor, and is provided with a microprocessor and control circuit, coupled to the motor for controlling it. The microprocessor is adapted to receive Bluetooth signals when paired to a user's portable Bluetooth-enabled mobile device, The microprocessor and control circuit are effective, when the user's portable Bluetooth-enabled mobile device is sufficiently close to the control circuit to be detected, to energise the motor to rotate the rotor in a first sense, effective to disable the locking mechanism to allow access to the tools.