Transport Security, Inc. has been providing The ENFORCER® Line of security products for over 20 years, including Rear Door Trailer Locks, King Pin Locks, Tamper Evident Cargo Security Seals,Air Cuff™ Locks and the full line of ABLOY® High Security Padlocks. The ENFORCER® Trax Covert Cargo Tracking Device provides location of assets via a secure web-based application and can be placed inside trailers, containers and cargo. Features: Portable, small form factor and no external antenna.