Three Ways to Prove Who You Are
Every access control decision comes down to authentication: something you have (a card), something you know (a PIN) or something you are (a fingerprint or face). Each has strengths, weaknesses and a price point. Here is the practical guidance we give clients.
Cards and Fobs
RFID cards are fast, cheap and familiar. Tap and enter in under a second, which matters at a busy main entrance. The weakness is obvious: cards get lost, forgotten and handed to colleagues. Older 125 kHz proximity cards can also be cloned with inexpensive tools, so for anything sensitive we specify encrypted smart cards such as MIFARE DESFire.
PIN Codes
PINs cost nothing to issue and suit low risk shared doors. But codes get shared, written on sticky notes and observed over shoulders. We recommend PINs mainly as a second factor — card plus PIN — for higher security rooms, not as the only method.
Fingerprint Biometrics
Fingerprints tie access to a person, which is why they dominate attendance use in India. Modern optical and capacitive sensors work well for office populations. Plan for exceptions: workers with worn fingerprints from manual labour, dusty factory environments and monsoon humidity all reduce read rates. Good systems enroll two or more fingers per user and keep a card fallback.
Face Recognition
Face terminals are now affordable and completely touch free, a feature many organisations began valuing for hygiene reasons. Recognition takes under a second, works with spectacles and handles thousands of users. Quality varies widely between brands, so we test devices against strong backlight and low light before recommending them.
Our Rules of Thumb
- Main entrance with high footfall: face recognition or card
- Attendance tracking: fingerprint or face, tied to payroll
- Server rooms and cash rooms: biometric plus card or PIN, two factors
- Rarely used store rooms: standalone PIN or card is fine
We will happily demonstrate reader options at your site. Book through app.techguru.co.in or call +91-8800567676.
