Every gym eventually asks whether to rely on a biometric device, QR codes or both. The answer depends on what you want attendance to do - just record visits, or also control the door.
Side-by-side comparison
| Factor | QR check-in | Fingerprint | Face recognition |
|---|---|---|---|
| Hardware | None (printed QR) or a tablet for kiosk | Fingerprint terminal | Face terminal |
| Upfront cost | Lowest | Moderate | Higher |
| Speed at peak | Depends on members opening the app | Slows with wet or sweaty hands | Fastest |
| Hygiene | Contactless | Shared surface | Contactless |
| Identity check | Linked to app account; relies on staff/kiosk | Verifies the person | Verifies the person |
| Blocking expired members | Needs staff or kiosk | Device can refuse entry | Device can refuse entry |
| Enrolment effort | None beyond app login | Each member scans once | Each member enrols once |
| Works for classes | Yes, per class | Usually entrance only | Usually entrance only |
| Lighting sensitivity | None | None | Can degrade in poor light |
When QR is the right choice
- Studios and class-led formats, where attendance per class matters more than a door.
- New branches before membership justifies a device.
- Small gyms with a staffed desk where the person scanning is seen.
- Fallback for members not yet enrolled on biometrics.
When biometrics are worth it
- Gyms with 150-200+ members, where staff cannot recognise everyone.
- Unstaffed or lightly staffed hours, where the device is the only check.
- Renewal enforcement - an expired member is refused at the door and sent to renew.
- Staff attendance for payroll, where buddy-punching is a concern.
The setup most gyms should use
- Face or fingerprint terminal at the main entrance with expired-member blocking.
- QR check-in as a fallback for unenrolled members and visitors.
- QR per class in studio rooms.
- Unknown-visitor logging to catch tailgating and enrolment problems.
Enrolment without a queue
Enrol in waves over two weeks, starting with the most regular members, and keep QR on until everyone is enrolled. Switch on expired-member blocking only after enrolment is complete. The biometric attendance guide covers devices and setup in more depth.
What attendance should do after the check-in
Whichever method you choose, attendance only pays for itself when it drives action: alerts for members whose visits drop, streaks and rewards for consistency, and accurate staff attendance for payroll. In Torzil, biometric and QR check-ins feed the same attendance record, so you can mix methods freely - see gym attendance software, biometric attendance and QR attendance.