The four types of biometric attendance machine
Every terminal on the Indian market is one of four types, and the right one is decided by your entrance and your workforce rather than by the spec sheet. Mixing types across gates is normal — AionHRMS records which method verified each punch, so a face reader at the main gate and a fingerprint unit at the back door feed one register.
- Fingerprint — the default for offices, schools and small sites: cheapest reliable proof of presence, unaffected by lighting. Wrong for workforces whose fingerprints are worn by manual work.
- Face recognition — contactless and fastest through a busy entrance; the answer for clinical and food-handling environments and for worn fingerprints. Costs more per terminal.
- RFID / proximity card — the pragmatic fallback for the people neither sensor reads reliably; cards can be lent, so pair it with biometrics rather than replacing them.
- Multi-method terminals — face plus finger plus card in one unit; useful at a single main gate that has to work for everyone.
- Rule of thumb from the field: under ~50 staff at one door, buy fingerprint; a high-traffic gate or hygiene-sensitive site, buy face; a shop floor with worn fingerprints, fingerprint plus cards.