Abstract: A cartridge mounted in a sleeve on the exterior of a motor vehicle door receives a planar card having raised, conductive indicia for completing an electric circuit on a plate forming a part of the cartridge. The circuit energizes a solenoid attached to an interior door handle of the vehicle for rotating the handle to unlock the door when the vehicle keys have been lost, misplaced or inadvertently left in the ignition, and the doors of the vehicle have been locked.

Abstract: A receptacle is mounted on the front plate of a cash register to hold and receive paper money bills. A slidable arm extends through a slot in the vertical wall of the receptacle and cash register to contact a bill placed on the bottom shelf of the receptacle. After a transaction is completed, the "sale" button on the register is pressed to actuate a motor driven cam and linkage which draw the arm and bill through the slot to deposit the bill in the cash register. The receptacle may include a tray for holding various items such as pens and pencils. Display of the bill submitted by a customer during a transaction avoids errors and disputes concerning the denomination of the bill.