System for locating products on rack of shelf in sales area, has transmitter emitting signal including identifier of shelf label detected by radio frequency identification reader or identifier safeguarded in memory detected by reader

摘要

The system (210) has an electronic shelf label (120) including a memory (223) to safeguard an identifier (ID-P) of a type of a product (321). The label includes a radio frequency identification (RFID) marker (221). The reader (233) includes an antenna (234) carried by shelf or an electronic shelf label support. The antenna detects the presence of the marker when the label is placed on the shelf or the support. A transmitter (230) is configured to emit a signal including an identifier (ID-E) and detected by the reader or the identifier safeguarded in the memory detected by the reader.