Custom software & mobile apps
Conference OS
Custom software that takes multi-day conferences from attendee spreadsheets to signed QR badges, controlled entry and meals counted once.
The challenge
Our client runs multi-day conferences with several halls, restricted sessions and catered meals. Printed lists couldn’t tell a real badge from a copy or show who may enter which hall, a meal could be claimed twice at two counters, and agenda, attendee and access data lived in separate spreadsheets, at venues where Wi-Fi often fails.
What we built
A web workspace for the client’s event team, on a secure cloud backend. The team builds the agenda, imports attendees from spreadsheets, sets access and meal rules, then designs badges and prints them from the browser. Each badge carries a digitally signed QR code that can’t be forged and holds no personal data; reception can reprint or replace it.
When a badge is scanned
- Who is scanning: the staff member, their registered device and its station must all be authorized.
- The badge: its signature must check out; revoked or replaced badges are refused.
- The door: session and hall passes, re-entry and capacity rules apply, and a deny always wins.
- The meal: each claim is counted in one locked transaction, so a meal can’t be redeemed twice.
Next: the staff app
A native iOS and Android scanner for door and meal staff. It will keep working offline from a signed, time-limited copy of each station’s rules, queue scans in encrypted storage and sync on reconnect.
Swipe sideways to see the whole schematic
Proven in testing
15,000-attendee import
Interrupted and resumed, with every registration created exactly once.
One meal, one claim
100 simultaneous claims on a single meal: exactly one accepted.
3,000-badge PDF batch
Built in the browser; every QR decoded, in print order.
Tested on real phones
Badge signatures verified on a physical iPhone and Android phone.
- Signed QR badges
- Badge designer & browser printing
- Access rules & re-entry
- Atomic meal redemption
- CSV & Excel imports
- Reception desk
- Device & station trust
- Audit trail
- iOS & Android staff app
- Secure cloud backend
Start a conversation
Still running on paper or manual checks?
Tell us about it. We’ll tell you plainly what we’d do first, and whether we’re the right fit.