Patent ID: 7839264

Claim:
A method of detecting an unplanned waste stream diversion at a facility, the method comprising: receiving an input bulk material at a facility, wherein the input bulk material comprises multiple input Radio Frequency Identification (RFID) tags that are suspended, in a colloidal state, in the input bulk material; generating an input count by counting the multiple input RFID tags with an RFID input sensor, as the input bulk material enters the facility; generating an output count by counting multiple output RFID tags with an RFID output sensor, wherein the multiple output RFID tags are part of a facility output that exits the facility, and wherein all of the multiple output RFID tags are from the multiple input RFID tags that entered the facility; comparing the input count with the output count; and in response to the output count being less than the input count, determining that at least some of the multiple input RFID tags are components of an unplanned waste stream diversion at the facility.