The supported biometric device models are:
DigitalPersona U.are.U 4500 (Recommended)
DigitalPersona U.are.U 4500 HD
DigitalPersona U.are.U 5160 (*This device is not available in India)
You can purchase these devices from websites like Amazon. Refer to the Digital Persona Device for detailed information.
Important: Mac OS does not support these devices. Note also that the Zenoti biometrics app does not support Linux Operating System.
For the list of supported Operating Systems, see this link.