Safeguard your identity and login instantly, without needing to remember complex passwords, when you use the Dell Wired Mouse with Fingerprint Reader - MS819. Windows Hello lets you securely sign-in to PCs with your fingerprint and the 256-bit AES encryption on your fingerprint reader keeps unauthorized users from accessing your computer. FIDO1 compliant, you can now make online payment securely. Simply plug the mouse into any available USB port to enable instant fingerprint recognition2. Arc-shaped, the mouse will feel great in your hand.