A portable remote keyless entry fob has a plurality of control elements disposed
on the fob for manual activation by a user. A display is provided for displaying
information to the user. An RKE transmitter wirelessly transmits RKE messages from
the fob to a vehicle-mounted receiver. A wideband receiver receives RF signals
broadcast by wireless devices nearby the fob and generates a received signal strength
indicator (RSSI) signal in proportion to the RF signals. A controller is coupled
to the plurality of control elements, the display, the RKE transmitter, and the
wideband receiver wherein the controller has an RKE mode for providing a plurality
of remote entry command functions. The controller has a detector mode for detecting
presence of a wireless device using a comparison responsive to predetermined signal
patterns and the RSSI signal. The controller generates an indication on the display
when the wireless device is detected.