An apparatus for transporting, storing, dispensing, or returning drugs and medical supplies comprising: a plurality of individually lockable bins, wherein each of said bins is substantially rectangular in shape and comprises: four side walls, a bottom wall, and a lid forming a slot located on a front portion thereof, wherein said lid is hingedly mounted to one of the side walls such that that the lid may be selectively moved between an opened position and closed position; a plurality of locking mechanisms, each associated with one of said plurality of individually lockable bins and comprising: a lock plate wherein said lock plate is pivotably mounted to the front wall of the lockable bin at a pivot point and has an upper portion located above said pivot point and a lower portion located below said pivot point, a latch located on the upper portion of said lock plate, wherein said lock plate is configured to be selectively rotated about said pivot point between a locked position, whereby the latch engages said slot, and an unlocked position, whereby the latch is located wholly outside of said slot, an actuator configured for horizontal movement so as to contact the lower portion of the lock plate, thereby rotating the lock plate between the locked position and the unlocked positions, a post located on the front wall of the bin, and a tail extending from lower portion of the lock plate and configured to deflect when contacting the post so as to bias the lock plate in the unlocked position; and a delivery module configured to receive said plurality of lockable bins. a plurality of individually lockable bins, wherein each of said bins is substantially rectangular in shape and comprises: four side walls, a bottom wall, and a lid forming a slot located on a front portion thereof, wherein said lid is hingedly mounted to one of the side walls such that that the lid may be selectively moved between an opened position and closed position; a plurality of locking mechanisms, each associated with one of said plurality of individually lockable bins and comprising: a lock plate wherein said lock plate is pivotably mounted to the front wall of the lockable bin at a pivot point and has an upper portion located above said pivot point and a lower portion located below said pivot point, a latch located on the upper portion of said lock plate, wherein said lock plate is configured to be selectively rotated about said pivot point between a locked position, whereby the latch engages said slot, and an unlocked position, whereby the latch is located wholly outside of said slot, an actuator configured for horizontal movement so as to contact the lower portion of the lock plate, thereby rotating the lock plate between the locked position and the unlocked positions, a post located on the front wall of the bin, and a tail extending from lower portion of the lock plate and configured to deflect when contacting the post so as to bias the lock plate in the unlocked position; and a delivery module configured to receive said plurality of lockable bins. four side walls, a bottom wall, and a lid forming a slot located on a front portion thereof, wherein said lid is hingedly mounted to one of the side walls such that that the lid may be selectively moved between an opened position and closed position; a plurality of locking mechanisms, each associated with one of said plurality of individually lockable bins and comprising: a lock plate wherein said lock plate is pivotably mounted to the front wall of the lockable bin at a pivot point and has an upper portion located above said pivot point and a lower portion located below said pivot point, a latch located on the upper portion of said lock plate, wherein said lock plate is configured to be selectively rotated about said pivot point between a locked position, whereby the latch engages said slot, and an unlocked position, whereby the latch is located wholly outside of said slot, an actuator configured for horizontal movement so as to contact the lower portion of the lock plate, thereby rotating the lock plate between the locked position and the unlocked positions, a post located on the front wall of the bin, and a tail extending from lower portion of the lock plate and configured to deflect when contacting the post so as to bias the lock plate in the unlocked position; and a delivery module configured to receive said plurality of lockable bins. a lock plate wherein said lock plate is pivotably mounted to the front wall of the lockable bin at a pivot point and has an upper portion located above said pivot point and a lower portion located below said pivot point, a latch located on the upper portion of said lock plate, wherein said lock plate is configured to be selectively rotated about said pivot point between a locked position, whereby the latch engages said slot, and an unlocked position, whereby the latch is located wholly outside of said slot, an actuator configured for horizontal movement so as to contact the lower portion of the lock plate, thereby rotating the lock plate between the locked position and the unlocked positions, a post located on the front wall of the bin, and a tail extending from lower portion of the lock plate and configured to deflect when contacting the post so as to bias the lock plate in the unlocked position; and a delivery module configured to receive said plurality of lockable bins.