A portable terminal carried by a user and in wireless communication with a local area network for displaying data based on the physical location of the user. A plurality of network nodes is distributed throughout a venue, such as a shopping mall or a store, in which products are offered for sale. The...http://www.google.co.uk/patents/US6937998?utm_source=gb-gplus-sharePatent US6937998 - Arrangement for and method of expediting transactions based on a customer's proximity to the transactions
