ELECTRONIC IDENTIFICATION APPARATUS AND IDENTIFICATION SYSTEM INCORPORATING SAME

摘要

A personal identifier comprising a portable device for generating a signal identifying the user. This identifier may be reprogrammed periodically by the user for protecting against unauthorized use or for sending special information. In addition the identifier can be energized to radiate a uniquely coded high energy signal to indicate the user needs emergency assistance and also includes a loudspeaker for transmitting the signal to a telephone receiver to allow communicating through the telephone system.