Switch and lock activating system and method

摘要: A system and method are provided for opening a lock or activating switch by electronically controlled means. In one form, finger ring is which contains code recording supported within adjacent the crown thereof. When hand of person wearing held near reading device, such as to dispose receptacle containing automatically read electrical signals generated thereby applied close open an operate motor solenoid and/or drive door open. If in code, they may be comparator operating if enabling code. The device comprise photoelectric cell bank cells adapted variations reflectivity another contain electronic circuit devices generate presence radiation field vicinity upon sensing ring. battery means generating when closed. combination separate card, required enable Improvements also constructions keys configurations rings, wrist watches, cards like, use systems, security transaction systems like.