Patent ID: 6255944
Filing Date: 2001-07-03
Classification: G08B

Abstract:
A method for providing status to a user in wireless communication systems comprising the steps of:receiving a first radio frequency signal while operating in a reduced power mode;switching from said reduced power mode to a normal operating mode;transmitting a second radio frequency signal comprising data representative of data comprised in said first radio frequency signal while operating in said normal operating mode;receiving a confirmation radio frequency signal while operating in said normal operating mode, said confirmation radio frequency signal transmitted in response to receipt of said second radio frequency signal and comprising status data in response to said second radio frequency signal;presenting said status data to said user; andswitching from said normal operating mode to said reduced power mode after a predetermined time has expired,wherein said first radio frequency signal is received over a first distance and said confirmation radio frequency signal is received over a second distance which is longer than said first distance.