Abstract: The invention relates to a method and apparatus for locating and tracking persons by use of an implantable device. The described invention is an implantable device composed of biocompatible materials in all areas where contact with organic tissue occurs. The gross anatomic siting of the device includes any limb, the torso, including back and perineum, the neck, and the head. The surgical anatomic siting of the device includes: (1) Supramuscular: for example, deep to the epidermis, dermis, and subcutaneous fat, on or attached to muscle and/or muscle fascia. Such a location is currently used for implantation of commercially available buried intravenous access ports, which are positioned on, and attached to, the pectoralis major muscle fascia; (2) Intramuscular: for example, within or between the muscles of a limb; (3) Submuscular: for example, deep to a large muscle.

Abstract: The invention relates to a method and apparatus for locating and tracking persons by use of an implantable device. The described invention is an implant able device composed of biocompatible materials in all areas where contact with organic tissue occurs. The gross anatomic siting of the device includes any limb, the torso, including back and perineum, the neck, and the head. The surgical anatomic siting of the device includes: (1) Supramuscular: for example, deep to the epidermis, dermis, and subcutaneous fat, on or attached to muscle and/or muscle fascia. Such a location is currently used for implantation of commercially available buried intravenous access ports, which are positioned on, and attached to, the pectoralis major muscle fascia; (2) Intramuscular: for example, within or between the muscles of a limb; (3) Submuscular: for example, deep to a large muscle.