Offering PINNACLE Hand Held Metal Detectors (HHMDs), also sometimes called Metal Detection Wands, are a very common security technology - they are used at airports, seaports, public buildings, public transportation facilities, prisons, hospitals, power plants, office buildings, hotels, and casinos, among others - where these devices allow the security staff to more accurately locate the source of an alarm on a scannees body, often after a scannee has gone through an Archway Metal Detector (AMD) and caused an alarm. By moving the HHMD around and close to a scannees body, the operator can fairly accurately locate sources of metal that may be on, or even in, the persons body. When a suspect area is located, the HHMD will generally give off an alarm squeal. All such devices operate on variations of the same physical principle as the AMD, that is, they emit time-varying electromagnetic fields and listen for waves coming back from conducting objects. Like AMDs, HHMDs do not have the ability to discriminate between a potentially harmful metallic weapon and some benign metallic item. The responsibility of the operator of the device is to judge whether the squeal he/she heard is truly suspect, then to investigate and determine the cause of it. The object triggering the alert may often be "innocent", for example, a wallet chain, belt buckles, watches, jewelry, shoes containing metal shanks or toes, among others. In these instances, the passenger should be directed to remove the object, which should then be submitted to visual and X-ray examination.In many facilities, the misconception exists that someone known by the screener, such as a fellow employee or other security personnel, should be allowed to circumvent the security screening system. It must be clearly established that in order to ensure the integrity of any security screening process, everyone must be subjected to the screening requirements, including passengers, airport employees, contractors, air crew, and security personnel.