Abstract: An electronic shelf label (ESL) is constructed to display a bar code, or the like, and inventory information, in addition to the typical product identification and price. A stock person carrying a handheld communicator with a bar code scanner can conveniently scan the ESL and then enter the number of items removed from or placed on the shelf. Assuming he is using a wireless communicator, the information is sent immediately to the ESL server via the ESL system, and the ESL display is then updated as well as the establishment's inventory database.