PORTABLE INSTRUMENT, ONBOARD CONTROL DEVICE, COMMUNICATION CONTROL METHOD, AND CONTROL METHOD
COMMUNICATION ESTABLISHMENT METHOD, MOBILE DEVICE, AUTHENTICATION DEVICE, AND COMPUTER PROGRAM
ENCRYPTION KEY REGISTRATION SYSTEM, ENCRYPTION KEY REGISTRATION METHOD, AND ONBOARD DEVICE
SENSOR INFORMATION PROCESSING SYSTEM FOR CONSTRUCTION MACHINERY
VEHICLE PORTABLE DEVICE AND TRANSMISSION/RECEPTION SYSTEM
UNAUTHORIZED COMMUNICATION ESTABLISHMENT PREVENTION SYSTEM
UNAUTHORIZED COMMUNICATION ESTABLISHMENT PREVENTION SYSTEM
UNAUTHORIZED COMMUNICATION ESTABLISHMENT PREVENTION SYSTEM
USER AUTHENTICATION DEVICE AND USER AUTHENTICATION METHOD
AUTHENTICATION SYSTEM, AUTHENTICATION METHOD, AND KEY INFORMATION ISSUING DEVICE
UNAUTHORIZED COMMUNICATION PREVENTION SYSTEM AND UNAUTHORIZED COMMUNICATION PREVENTION METHOD