System for favorising sale of goods at large sale areas, has client devices allocated to clients for accompanying functions of system, and commercial bag placed near one of sale locations to trigger message relative to goods

摘要

The system has client devices (50, 52) allocated to clients for accompanying functions of the system during purchase of goods (25). A commercial bag is placed near one of sale locations e.g. bookshelves (20, 21), so as to trigger a visual or sound message relative to the goods. The bag has an emission unit used for emitting the message. A storage element (100) stores the client devices. A locking device locks the client device. A reader (110) determines an identity of the client, and liberates the client device.