Method for recording photographic image data and photographic image data recorder using the same
JP2010077647A
Apparatus for managing entrance into room
JP2010033394A
Carbon dioxide emission calculation system using wireless authentication
JP2009065383A
Repeater, radio communication system, communication range expanding method, and radio communication method
JP2008270907A
Communication device, pairing method between communication devices, method for pairing wearable key and ic card, and system composed of wearable key and ic card
JP2004143806A
Authentication method for wireless key, and wireless key using the same
