Exam Hall Seating Plan Android App with QR Verification

On exam mornings, college notice boards crowd with students hunting for their hall and seat number on printed lists, and invigilators manually match identity cards against registers at the door — slow, error-prone and stressful. This project replaces the paper loop with an Android app on both sides of the door. The exam cell publishes a seating plan (exam, date, hall, seat allotment per roll number) once; every student instantly sees their personal schedule with hall and seat, plus a downloadable seating chart. Each paper generates a QR hall ticket encoding the ticket ID, roll number, subject, hall and seat with a checksum. At the entrance the invigilator scans it with the same app and gets an instant verified/not-verified verdict with the student's photo-ready details. The demo includes a full session: three papers, multiple halls, a 36-seat grid and working QR tickets, so the viva can demonstrate the complete publish-to-verify flow on two phones.

1. The administrator creates an exam session: papers with dates and times, halls with seat capacity, and the seat allotment per roll number.
2. Publishing the session makes each student's personal schedule (paper, hall, seat) visible in the app.
3. For every paper the app generates a QR hall ticket binding ticket ID, roll number, subject, hall and seat with a checksum.
4. The student opens the ticket at the hall entrance; the invigilator scans it with the app's verification mode.
5. The app decodes the QR, validates the checksum and allotment, and shows a verified verdict with the student's details and seat.
6. Invalid, expired or already-scanned tickets are flagged so impersonation and duplicate entry are caught at the door.

Tech stack:

• Kotlin, Android SDK (minSdk 26)
• Jetpack: Room, ViewModel, LiveData
• ZXing (QR generation & scanning)
• Material Design 3 components
• PDF export (Android Print framework)

• [Student exam schedule] Personal paper list with date, time, hall and allotted seat number, synced from the published seating plan.
• [Hall seating chart] Visual grid of the allotted hall showing occupied and free seats, with the student's own seat highlighted and a PDF export option.
• [QR hall tickets] One signed QR per paper encoding ticket ID, roll number, subject, hall and seat — scannable offline at the entrance.
• [Invigilator verification mode] Scan the QR to get an instant verified verdict with student details; invalid or duplicate scans are flagged.
• [Admin publish flow] Exam cell enters papers, halls and the roll-number-to-seat mapping; publishing pushes the plan to all student devices.
• [Reporting-time guidance] Each paper shows reporting time and hall rules so students arrive prepared.
• [Offline-first design] Seating data and tickets are cached locally; entrance verification works without internet.

• Complete Android app source code (Kotlin): student, invigilator and admin flows
• Demo APK with a realistic exam session pre-loaded
• Seat-allotment algorithm and data model documentation
• QR ticket format specification (payload fields + checksum)
• Project report PDF (background, architecture, methodology, testing)
• PPT presentation for final review
• Viva Q&A preparation document (QR encoding, Room, offline sync, permissions)

• Seat allotment is entered or imported by the administrator — the app does not auto-generate optimal allotments from constraints (listed as future scope).
• QR verification trusts the checksum, not a live server lookup; a stolen phone with a valid ticket would still verify (noted honestly in the report).
• The demo uses sample student data; connecting to a real college ERP needs an API integration per institution.
• Camera-based scanning needs adequate lighting at the entrance; the fallback is manual ticket-ID entry.
• Multi-session (multiple colleges) support is out of scope for the base build.