Cross Platform Event Ticketing App with QR Check In and Admin Tools
An events company needed a ticketing app that could scale for busy check in periods. We built a cross platform app with QR scanning, offline fallback for venue connectivity issues, and an admin dashboard workflow that reduced line time and improved check in accuracy.
Confidential engagement. NDA available upon request.
65%
Faster Check In
0.5%
Scan Error Rate
2
Seconds per Scan
8
Weeks to Launch
About the Client
Industry
Events
Company Size
30 to 70 staff and contractors
Background
A ticketing operator supporting multiple venues. Check in lines were long during peak periods and staff needed a faster and more reliable workflow.
Operational Constraints
Peak traffic behavior
Check in had to be fast and reliable during surges, with minimal UI friction.
Connectivity issues at venues
Some venues had unstable connectivity, requiring offline capability for validation.
Fraud prevention
Duplicate scans and invalid tickets had to be detected quickly and consistently.
Admin oversight
Supervisors needed visibility into counts, exceptions, and staff performance.
The Mission
Build a cross platform ticketing system that improves check in speed, prevents duplicates, and stays reliable when connectivity is unstable.
How We Approached It
01. Workflow and data model
Week 1 to 2- Check in flow mapping with staff
- QR schema and validation rules definition
- Offline fallback design and reconciliation rules
- Admin reporting requirements
02. Build and testing
Week 3 to 7- Cross platform app implementation with scanning
- Offline cache and sync reconciliation
- Load testing with simulated peak scans
- Field testing in live venue conditions
03. Launch
Week 8- Pilot at one event with on site support
- Telemetry and error monitoring
- Adjustments based on field feedback
- Rollout playbook for venues
Vulnerabilities Discovered
0
CRITICAL
1
HIGH
2
MEDIUM
1
LOW
Duplicate scan handling under offline mode
Offline validation required strong reconciliation rules to prevent duplicate admissions.
Offline validation required strong reconciliation rules to prevent duplicate admissions.
Scan feedback needed to be faster
UI feedback timing impacted throughput during peak periods.
UI feedback timing impacted throughput during peak periods.
Admin reporting definitions varied
Metrics needed consistent definitions to avoid confusion across venues.
Metrics needed consistent definitions to avoid confusion across venues.
Device camera performance variance
Older devices required additional scan tuning to maintain speed.
Older devices required additional scan tuning to maintain speed.
How We Fixed It
Offline reconciliation rules
Implemented local validation with server reconciliation and duplicate detection.
High throughput scanning UX
Optimized feedback, animations, and scan flow to reduce time per attendee.
Admin visibility
Implemented clear operational dashboards for counts, exceptions, and performance.
Measurable Outcomes
The new system reduced check in lines and improved accuracy, enabling smoother event operations across venues.
65%
Faster Check In
2
Seconds per Scan
0.5%
Scan Error Rate
40%
Fewer Exceptions
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