Patent ID: 7295110

Claim:
A lockable storage device for depositing an object and for withdrawing it, which comprises at least one safe-deposit box, intended to contain said object, which includes a door capable of being kept in the closed position by at least one lock, a code entry device and a control unit, said control unit being designed to authorize an operation to deposit an object and an operation to withdraw said object following the entry of a withdrawal code, and to control the operation of keeping the door in the closed position between said deposit operation and said withdrawal operation, wherein the lockable storage device includes at least one weight sensor subjected to the weight of said safe-deposit box and designed to transmit a signal representative of the weight of the safe-deposit box, and wherein the control unit is designed: to determine the weight of the object contained in the safe-deposit box after a deposit operation; to determine the change in weight of the safe-deposit box during an operation to withdraw said object; and to emit a warning signal at the end of the withdrawal operation if said change does not correspond to the weight of said object.