You need to give your biometrics once every 10 years.
You don't need to give your biometrics again until the 10-year period expires.
If you gave biometrics in the past as part of an application for a visitor visa, work or study permit and they're still valid, you don't need to give them again..
For a biometric to be a good indicator of user identity, we must measure something that is both unique and distinguishable between users.
Ignoring adversarial tampering for the moment, for biometrics to be effective they must have both low false positives and low false negatives..
When used correctly, biometric security devices are more secure than traditional methods.
The benefit, then, derives from the value of the data you are trying to protect.
For example, if digitized medical records are stolen from a doctor’s office, that doctor potentially faces steep fines under federal law.
Therefore, an employer must first conduct an assessment of the need for a biometric system and an evaluation of any other types of system before they go ahead and introduce the current one.
After this, the employer must consider if the data has been obtained and processed fairly.
Usually that would require the consent of the employees.
