Patent ID: 7852209

Claim:
A method comprising: providing a plurality of passive location indicators for use within a building or facility; providing at least one locator activating electromagnetic field and at least some of the plurality of passive location indicators wirelessly transmitting location specifying indicia in response thereto; sensing a first ambient condition selected from the group consisting of fire, smoke, gas and temperature at a first location within the building or facility; sensing indicia from each of the plurality of passive location indicators received at one or more of a plurality of indicia sensing locations within the building or facility; responsive to the sensed first condition at the first location, transmitting a representation of that condition to a displaced location; transmitting indicia received from the plurality of passive location indicators by each of the plurality of indicia sensing locations to the displaced location; and displaying representations of the indicia including a location of each of the plurality of passive location indicators within the building or facility at a display location wherein each displayed representation of indicia is displayed adjacent an identifier of one of the plurality of indicia sensing locations that sensed the indicia.