Video: Berkeley unveils handheld snooper

Berkeley Varitronics Systems Inc. unveiled its Bloodhound hand-held cell phone detector designed to enable security officers to scan real-time for unauthorized cell phone activity in correctional facilities and detect the precise location of the caller using a direction finding antenna.
Berkeley noted that in 2008 correctional officers confiscated 847 contraband cellphones in Maryland prisons, 2,809 cell phones in California prisons and 1,861 cell phones in Mississippi prisons; and Federal prison officers found 1,623 cell phones.
The Bloodhound is designed to track down and pinpoint contraband cellphones without interfering with authorized communication channels. The device uses a high-speed scanning multi-band receiver harnessed to a DF-direction finding antenna. There is a headphone jack with a progressive audible alert tone and an accompanying vibrator that can alert security officers of cellphone activity as they move closer to the source. In addition, an onboard pulsating laser will ID the target with a blinking laser dot while in the DF mode.