Following the Home Office Scientific Development Branch 2009 Exhibition a number of police forces are now using the FriskerPro hand or wrist worn metal detector with silent detection.They particularly like the fact you can tuck it up your sleeve.
Others interested in the product include local councils for night clubs.
It is a really useful tool for doormen to stop knives etc. But our stocks are getting low at the current price, because of the $ exchange rate they will be going up from £120 to £142 when present stock runs out.