020/100 Bluetooth, RFID and NFC: What Do Our Keys Really Know About Us?
BLUETOOTH, RFID and NFC: What Do Our Keys Really Know About Us? Wireless technologies have entered both our homes and workplaces. Many of us today unlock doors with a phone, a chip, a card, or a fob. All of these tools—whether they use Bluetooth, RFID, or NFC—appear to be a convenient alternative to traditional keys. But few people stop to think about what kind of information these “smart keys” actually transmit. While a mechanical key opens a lock and does nothing more, a smart key communicates. It tells the system we’re arriving. It logs the time, the place, the [...]