The Wolfhound Cell Detector from Berkeley Varitronics is a hand-held, wireless sniffer tuned to the RF signature of common cell phones that enables enforcement of no-wireless policies, according to the company.
Wolfhound's high-speed scanning receiver utilizes a multi-band DF (Direction Finding) antenna system that allows security personnel to locate nearby cell phones in either standby or active mode using voice, text (SMS) or data transmissions.