Fingerprint clocking FAQs
How does fingerprint clocking work?
At enrolment, the terminal maps the unique points of an employee’s fingerprint and stores them as an encrypted template. Each time they clock in, the live scan is matched to that template. If it matches, the clocking is recorded against that person, so every hour is tied to who actually worked it.
Does the system store an image of my fingerprint?
No. No fingerprint image is kept. The terminal stores only an encrypted mathematical template, which cannot be reverse engineered back into a fingerprint. Biometric data is special category data under UK GDPR, and storing templates rather than images is central to handling it responsibly.
What happens if an employee cuts or injures a finger?
Each employee can enrol more than one finger, so if one is cut or injured they can still clock in with another. Terminals also support card, fob, and PIN clocking as a backup, so no one is ever locked out.
Do staff have to use a fingerprint, or is there an alternative?
There is an alternative. The ICO advises giving employees a genuine choice, and Computime terminals also support card, fob, and PIN clocking, so staff who prefer not to use a fingerprint can still clock in.
If an employee leaves, is their fingerprint data deleted?
Yes. When an employee leaves, their template is removed from both the terminal and the cloud, with a record of the deletion, supporting the UK GDPR right to erasure so you are not left holding data for people who no longer work for you.
Can fingerprint terminals control door access as well as clocking?
Yes. The same fingerprint can record attendance and control who comes through your doors, so you manage time and access from one system. See our access control systems for more.