Patent ID: 7412226

Claim:
A wireless communication system, comprising: a first wireless, push-to-talk voice communication device configured to send and receive ½ duplex wireless communications, the first wireless communication device having a housing and a display; a second wireless communication device; the first wireless communication device having a push-to-locate activation mechanism which detects selection of a target number corresponding to the second wireless communication device and sends a push-to-locate request for the target number to a carrier network to obtain a geographical location of the second wireless communication device using a location-based service, and which controls the display to present a geographical location of the second wireless communication device received in response to the push-to-talk request; and the second wireless communication device comprising: a display-less, keypad-less wireless push-to-talk voice communication device configured to send and receive ½ duplex wireless communications, a GPS receiver for providing a geographical location of the second wireless communication device through the location-bases service, a first mode where the second wireless communication device only accepts calls from predetermined numbers, and a second mode where the second wireless communication device accepts call from numbers in addition to the predetermined numbers, a housing, a call activation mechanism situated on the housing, a memory storing a predetermined number of contacts, and a controller configured to initiate an outgoing call to one of the predetermined number of contacts upon activation of the call actuation mechanism, the controller further configured to limit outgoing calls to the predetermined number of contacts, the call actuation mechanism including a plurality of call selection buttons each corresponding to a respective contact of the selected number of contacts, the housing of the second wireless communication device having a plurality of icons, each icon associated with a respective call selection button and comprising a visual identifier for the contact associated with the respective call selection button, and each call selection button being a push-to-talk button, the second wireless communication device including phone number information mapped to each respective push-to-talk button by a method including programming each push-to-talk button with phone number information by a user accessing a web page on the Internet, the user entering phone number information for each push-to-talk button, and the second wireless communication device receiving over-the-air messages with phone number information for each push-to-talk button, and mapping the phone number information for each push-to-talk button with each respective push-to-talk button.