A method according to one embodiment may include detecting an activated electronic article surveillance (EAS) tag in an interrogation zone, and reading at least one radio frequency identification (RFID) tag in response to the detecting of the activated EAS tag in the interrogation zone to investigate a cause of the EAS tag in said interrogation zone. A method according to another embodiment may include detecting a condition representative of an activated RFID tag in a controlled area, and taking corrective action to prevent removal of the activated RFID tag from the controlled area.