The present invention is essentially a method and system for leaving and retrieving messages at specific coordinate way points within a commercial mobile radio service (CMRS) provider network. Users carry or transport interface devices for communicating over the network and are able to record and view...http://www.google.co.uk/patents/US6480713?utm_source=gb-gplus-sharePatent US6480713 - System and method of accessing and recording messages at coordinate way points
