The invention provides a releasable fastening system particularly suitable for use in banks and similar institutions. The releasable fastening system is intended for use in conjunction with a storage unit having an opening element, such as drawer (18). The fastening system includes a latch means (38) and an engagement (34) for engaging the latch means (38). Also included is a bias means (44), biasing the opening element (18) to an opening position. Each of the latch means (38), the engagement means (34) and the bias means (44) is located internally of the storage unit when the opening element (18) is closed. The engagement means (34) is adapted to disengage the latch means (38) pursuant to a command.