The verdict in three sentences
A factory running 150 to 800 people across three shifts cannot make its payroll reliable with a hand-signed paper attendance sheet. Biometric or QR attendance timestamps every entry and exit to the second, automatically computes overtime, and exports a clean file to payroll. The result: hour disputes drop by roughly 70 % and HR reclaims 8 to 15 hours per month.
Paper sheet versus attendance app: the real gap
Paper attendance is not just slow, it is contestable. A team leader jotting hours by hand introduces errors, omissions and favors. The app timestamps every badge and leaves a tamper-proof trail.
| Criterion | Paper sheet | Biometric/QR attendance app |
|---|---|---|
| Logging one team (50 people) | 20-30 min/day | Instant |
| Overtime calculation | Manual, disputed | Automatic by rule |
| Hour disputes / month | 12-20 | 3-6 (-70 %) |
| HR consolidation time | 8-15 h/month | 1-2 h/month |
| Payroll export reliability | Low | Structured file |
| Attendance fraud | Frequent | Near zero (biometric) |
On a headcount of 300, reclaiming even 2 % of mis-counted hours is worth several hundred thousand FCFA a month.
2026 budget: custom build or SaaS
Two paths exist. Monthly SaaS starts fast but scales expensively; the custom build is a one-time investment you own and that plugs into your existing payroll. The figures below are a 2026 order of magnitude.
| Item | Custom build | Monthly SaaS |
|---|---|---|
| Upfront cost | 1,500,000 - 3,000,000 FCFA | Low |
| Recurring cost | Hosting only | 800 - 2,000 FCFA/employee/month |
| Biometric reader | 45,000 - 120,000 FCFA/unit | Same |
| Time to go live | 6 - 9 weeks | 1 - 2 weeks |
| Custom payroll export | Included | Often limited |
| Code ownership | You | The vendor |
For 300 employees, SaaS at 1,200 FCFA/employee/month is 360,000 FCFA/month, over 4,300,000 FCFA/year — the build pays for itself in under a year.
Mini case study
Moussa runs a cocoa-processing factory in San-Pedro with 240 employees across three shifts. Before, his HR spent 12 hours a month re-keying sheets and handled about 15 hour disputes. After rolling out the QR app (a 2,100,000 FCFA build), disputes fall to 4 a month and re-keying to 1.5 hours. By reclaiming 2 % of ghost hours on a 24,000,000 FCFA payroll, he saves around 480,000 FCFA a month: the app pays for itself in under five months.
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FAQ
Biometrics or QR badge: which to choose?
Biometrics (fingerprint or face) stops one worker clocking in for another and suits sensitive sites. QR badges cost less (printed from 500 FCFA/badge) and are enough where fraud is low. Many factories mix both.
Does the app compute overtime under labor law?
Yes, the rules (40-hour threshold, premiums, public holidays) are configured at setup. The app applies the scale automatically, which removes nearly all disputes.
Does it work without stable internet?
Yes. Offline mode stores punches locally and syncs as soon as the network returns — essential in a port or industrial zone.
Can it export directly to our payroll software?
Yes. The export generates a structured file (CSV or a specific format) compatible with your payroll, avoiding any re-keying. That is the main HR time saving.
How long to deploy on a 300-person site?
Expect 6 to 9 weeks across scoping, reader installation and team-leader training. A pilot on a single shift takes one to two weeks.
Let's talk about your project. We scope your site, your shifts and your payroll export in one call. WhatsApp +221 77 596 93 33.
Mohamed Bah
Fondateur, Kolonell
Passionate about digital and entrepreneurship in Africa, Mohamed has been helping Sénégalese businesses with their digital transformation since 2020. Founder of Kolonell, he believes every SME deserves a professional and accessible online présence.
