Abstract: Integrated cross-platform perimeter access control system with a RFID-to-Bluetooth selective adapter configured with a RFID lock, a wireless communication conversion unit configured for operating under a first wireless communication platform and a second wireless communication platform, and a smartphone is disclosed. RFID-to-Bluetooth selective adapter is installed above sensor area of RFID lock to facilitate RFID lock to interrogate the RFID-to-Bluetooth selective adapter. RFID-to-Bluetooth selective adapter equipped with photo sensor unit can be turned on in a contactless manner using smartphone with camera light source. Methods adapted for short-range or long range space/room management automation, transportation vehicle rental management, and automated vehicle parking lot management are included.