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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.

Client
Conference organizer
Area
Registration, entry & meals
Status
In development · core built and tested
Practice
Contract R&D

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.

Fig. 05 — From spreadsheet to doorSchematic
The event team prepares the agenda, attendee import, access and meal rules and badges in a web workspace; a secure cloud backend signs every badge, decides every scan, counts each meal once and records who did what; at the venue the reception desk, hall doors and meal counters act on its decisions, and each attendee carries one signed QR badge. EVENT TEAM · WEB SECURE CLOUD BACKEND AT THE VENUE Agenda & halls Days, sessions and meals Attendee import CSV or Excel, previewed first Access & meal rules Passes, denies, re-entry Badge design & print PDFs straight from the browser ONE SOURCE OF TRUTH Signs every badge Forgery-proof QR codes Decides every scan An explicit deny always wins Counts each meal once One locked transaction Records who did what Staff, device, reason, time Reception desk Look up, print, reprint, replace Hall doors Allowed, or denied with a reason Meal counters Each meal redeemed only once ATTENDEE Carries one signed QR badge: no app, no account and no personal data in the code

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

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Still running on paper or manual checks?

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