Patent ID: 7839284

Claim:
A product detection system for a shopping cart having a tray and a frame, the product detection system comprising: a. a weight sensor, affixed to the tray, for sensing the weight of a product on the tray, b. a presence sensor, located on the frame and directed at the tray, for sensing the presence of the product on the tray, c. a signal, visibly located on the shopping cart, wherein the signal activates when the weight sensor or the presence sensor are activated, and wherein the signal remains activated so long as either the weight sensor, the presence sensor, or both are activated, and deactivates otherwise, and wherein the presence sensor comprises at least one pressure sensitive strip mounted on those portions of the frame immediately adjacent to the tray, the at least one pressure sensitive strip mounted with any pressure sensitive surfaces facing upwards, and wherein the activation of the at least one pressure strip activates the presence sensor.