Currently, there are two types of door lock that been a trend. First, it’s the door lock that uses Bluetooth technology, and second – a door lock that uses NFC. The two types of the door lock were promising, but unfortunately the phone must be turned to open the door. How if the mobile phone run out of the battery?
CalypsoKey is a door lock system that uses RFID technology so it does not need battery or application to be installed on your mobile phone. CalypsoKey consists of door lock system and also an iPhone casing which houses the RFID. To open the door, just close the phone to the door handle and the door will automatically unlock. Much more comfortable, because without relying on the phone itself, and we can simply take the casing only.