Explain a homework method so parents can help without confusing kids
Beginner10h1
Vision LLMNext.js
17/20QR and Geofence Attendance
Take attendance with a rotating QR code that only works in the room.
Beginner8h1–2 people16/20 fit
Build QR and Geofence Attendance for college lecturers in ~8h with 1–2 people. Stack: Next.js + Geolocation + QR codes.
Why it wins: Every college student knows the pain.
Build flow
01 · Problem
Roll calls waste time and proxy attendance is common.
02 · Solution
Show a QR that changes every few seconds, check the scanner's location against the room and record attendance.
03 · Build
- 1Generate rotating tokens
- 2Scan page
- 3Check location
- 4Store records
04 · Demo
The audience scans the rotating code.
MVP checklist
- Rotating QR
- Location check
- Live count
- Export
Tech stack
| Tech | Role | |
|---|---|---|
| Next.js | Frontend + API routes | Web |
| Geolocation | Device location | Device |
| QR codes | QR codes | Device |
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