Patent ID: 8384550

Claim:
A system comprising: a plurality of identification units, each of the plurality of identification units being associated with a different one of a plurality of participants and carried by the plurality of participants at a conference; and a monitoring station that: determines that at least two of the plurality of participants have interacted with one another in response to determining that locations associated with the at least two participants were in close proximity to one another and have associated timestamps that overlap for at least a predetermined amount of time; and receives a request from at least one of the at least two of the plurality of participants that have interacted with one another to provide information about at least one of remaining ones of the at least two of the plurality of participants that have interacted with one another, wherein a tracking module receives the information from an external transmitter device that resides at a vendor booth at a conference; wherein the tracking module in a first one of the plurality of identification units transmits the information to a tracking module of a second one of the plurality of identification units for storage in the tracking module of the second one of the plurality of identification units and for subsequent relay from the second one of the plurality of identification units to the monitoring station; and wherein the tracking module in the first one of the plurality of identification units receives information from the tracking module of the second one of the plurality of identification units which was received by the second one of the plurality of identification units from at least one other external transmitter device, and stores the information in the memory to relay the information to the monitoring station.