Methods and systems for collecting, tagging, searching for, retrieving, inventorying, and transferring evidence by law enforcement officials are described, in which RFID tags associated with pieces of evidence can be interrogated to assist in locating information relating to that evidence. For example, a tamper-detect energy meter may include metering circuitry, a processor, a tamper detect switch, and a cover with a switch interface surface. The source overlap region is biasable to cause a first voltage difference between the source overlap region and the gate to exceed a breakdown voltage of the dielectric material. A pole tooth with a removable head is arranged between each two pool teeth with a fixed tooth head.