Biometric data is data about an individual that is gathered upon their physical or physiological traits, such as their voice, face, fingerprints, and retina. This data can be used to identify and authenticate individuals, allowing them access to applications and services.

To protect biometric data, it is important to:

1. Understand why you need the biometric data and what it will be used for;
2. Ensure the data is secure and encrypted at all times;
3. Control passwords and other security measures;
4. Create a data retention policy;
5. Implement a physical access control to protect your system;
6. Comply with data protection regulations like GDPR; and
7. Train your staff to be aware of any security risks.