No single biometric technology is best for all situations.
Many factors must be taken into account, including device capabilities, lighting, location, the expected number of users, etc. It is also important to note that different biometric technologies are at different stages of maturity.
For example, fingerprint has been used for many years now in the consumer market, while iris recognition is still not widely adopted by consumers, but is proving to be a more unique identifier as the technology matures.
Our facial recognition is designed to work across a broad range of devices, on computers, tablets and phones, and is used in combination with a trusted device -- meaning that with the True Key app, only someone with access to your own device can use facial recognition with your profile.
For added security, enable Enhanced Face or combine Face with another factor to verify it's you.