Fingerprint is cheaper per user; face recognition is faster and works where hands are dirty or damaged. For office staff, fingerprint is usually sufficient. For manual trades — workshops, construction, food production — worn or wet fingers cause repeated read failures, and facial recognition avoids the problem entirely.
Why fingerprint fails in some workplaces
Fingerprint readers match ridge patterns. Anything that flattens or obscures those ridges degrades recognition: manual labour wears ridges down over years, moisture and oil interfere, and cuts change the pattern temporarily.
In an office this rarely matters. On a building site or in a workshop it produces daily failed reads, staff queueing, and eventually a system nobody trusts.
Where face recognition wins
Facial systems are contactless and typically faster per person, which matters at shift changes when thirty people clock in within a few minutes.
Their weakness is lighting. Strong backlight — a terminal mounted opposite a window or an open door — causes failures. Mount facing away from direct light and the reliability is high.
Cards and proximity
Card systems are quickest to enrol and cheapest to expand. Their weakness is obvious: a card can be handed to a colleague. Where buddy-punching is a concern, biometrics are the point of the exercise.
Many workplaces run cards for general staff and biometrics where accuracy matters.
Attendance or access control
These are different jobs that often share a terminal. An attendance terminal records who was present and when. An access control terminal also drives a door lock, deciding who may enter.
Combined terminals do both. If you may want door control later, buying a combined unit now is cheaper than replacing the terminal.
Specifying a system
- User capacity — check both template capacity and transaction storage. A terminal storing 1,000 users but only 50,000 records fills up faster than expected.
- Data export — USB export, LAN, or software integration. This determines how much manual work payroll does each month, and it is the specification most often overlooked.
- Power and network — a terminal at a gate needs both reaching it.
- Enrolment time — enrolling 200 staff is a project. Ask how long per user.
The part that decides success
Hardware rarely fails these projects; process does. Decide before installation how late arrivals, missed punches, overtime and leave are handled, and who fixes an incorrect record. A terminal producing data nobody has agreed how to interpret creates arguments rather than settling them.
See Time & Attendance Machines and ZKTeco Terminals.
Frequently asked questions
Can one terminal handle multiple branches?
Each site needs its own terminal; software then consolidates the data centrally.
What happens during a power cut?
Terminals retain enrolled users and stored records. Some accept a backup battery for continuous operation.
Is facial recognition affected by masks or beards?
Masks cause failures on most systems. Gradual changes such as beard growth are handled well, since templates update over time.