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A security token is a peripheral device used to gain access to an electronically restricted resource. The token is used in addition to, or in place of, a password.[1] Examples of security tokens include wireless key cards used to open locked doors, a banking token used as a digital authenticator for signing in to online banking, or signing transactions such as wire transfers.
Security tokens can be used to store information such as passwords, cryptographic keys used to generate digital signatures, or biometric data (such as fingerprints). Some designs incorporate tamper resistant packaging, while others may include small keypads to allow entry of a PIN or a simple button to start a generating routine with some display capability to show a generated key number. Connected tokens utilize a variety of interfaces including USB, near-field communication (NFC), radio-frequency identification (RFID), or Bluetooth. Some tokens have audio capabilities designed for those who are vision-impaired.
- ^ Schink, Marc; Wagner, Alexander; Unterstein, Florian; Heyszl, Johann (2021-07-09). "Security and Trust in Open Source Security Tokens". IACR Transactions on Cryptographic Hardware and Embedded Systems: 176–201. doi:10.46586/tches.v2021.i3.176-201. ISSN 2569-2925. S2CID 235349083.