wireless dongle

Wireless lock is a protection concept for authenticated LAN or WLAN network clients offered from various vendors in various functional shapes and physical designs. In contrast to wireless keys, wireless lock puts emphasis on automatic locking instead of just locking by time-out or unlocking.
The wireless lock concept supports initialising the client with authentication and log-on as electronic key solutions. Beyond that a wireless lock supports automatic log-off after user leaves unlocked network client and independent from time-out conditions. Protection comes into effect, while integrated or galvanically attached and paired receiver/transceiver stays connected with protected client object as soon as wireless token gets separated from client exceeding a set maximum allowed distance, generally the manual reach required for operating keyboard attached to client.
Currently (2011-07) there is no general standard supporting inter-operability of wireless lock concepts.

Most offered air interface solution is based on ISO/IEC 18000-3 HF (13,56 MHz) passive RFID tags and near field communication (NFC)-like reader specification.
Most offered authentication procedures make use of IETF public key infrastructure (PKI).
Comfortable solutions support single sign-on servicing.
Bluetooth BLE profile proximity is said to support such application.

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