Abstract: A cash drawer and a method for determining the change in contents of a cash tray is provided. The cash drawer includes: at least two force measuring devices; and a cash tray mounted on the force measuring devices, the cash tray including a plurality of containers, each container for holding a plurality of cash tokens, wherein the cash tray is coupled to each of the force measuring devices through a kinematic mount.

Abstract: A method and apparatus for the accurate detection of cash tokens being added and/or removed from a cash register or other cash holding device; that uses pre-knowledge of cash tokens to be added and/or removed from the device; a modified cash tray suspended via a lever mechanism, held in equilibrium against a force transducer; and a processing element to analyse the signal received from the transducer, comparing it against that pre-knowledge, for the purpose of generating or verifying a set of expected cash tokens being added and/or removed from the cash holding device.