Roswell, the first tag of its kind, uses only its stainless steel interior as an antenna. The patent-pending tag is constructed of two cylindrical metal cases with a thin high temperature substrate between them. While existing products in the market may use a tag packaged inside a metal case, Roswell is completely different. Because there is no RFID tag packaged inside Roswell, the antenna-free design ensures reliability and durability by eliminating the risk of tag failure from high temperature and high pressure autoclave and corrosive liquids. Roswell is designed for quick an convenient attachment and can be welded directly to metal trays or easily attached via a stainless steel bracket to a medical equipment.