1. Offline capability
Does it take payments with no signal?
This is the first thing to test, not the last. Festivals happen where networks fail, so a system that needs connectivity for every tap will stall at the worst possible moment. Confirm payments work fully offline, that queued transactions survive a crash, and that double-spends are reconciled at sync.
2. Hardware requirements
Phones, or proprietary readers?
Systems that require fleets of dedicated readers add rental cost, logistics, and failure points. A system that turns any NFC-capable Android phone into a terminal is cheaper to deploy and easier to scale — your vendors may already own the hardware.
3. Vendor onboarding & settlement
How fast to set up, how clean to pay out?
On event day you will onboard dozens of vendors fast. Look for minutes-not-hours setup, per-vendor terminal assignment, and automated end-of-day settlement that pays each trader from recorded sales — no cash count, no reconciliation spreadsheet.
4. Pricing & fees
What's the true cost per event?
Compare the whole model: per-transaction fees, hardware rental, card cost, and setup. A low headline rate can hide expensive reader rental; a phone-based system with simple card pricing is often cheaper end to end.
5. Real-time analytics
Can you see the event as it happens?
Live revenue by vendor, hour, and zone lets you move staff and stock toward demand during the event, not after it. Exportable reporting afterward serves finance, vendors, and sponsors.
6. Security & fraud
How is money protected?
Cards should be cryptographically signed (e.g. HMAC) so a forged or tampered card is rejected, balances protected against double-spend with optimistic locking, and the platform should include fraud rules, immutable audit logs, and role-based access for staff.
7. Refunds & attendee experience
Is it painless for attendees?
Check the full attendee journey: easy top-up, sub-second taps, lost-card recovery (freeze and move the balance), and a clear path to refund or cash out unspent credit after the event.
8. Support & scalability
Will it grow with you?
One platform across multiple events, organization-level analytics, and responsive support matter as you scale from a single market to a season of festivals. Confirm it handles your peak crowd without new infrastructure.
How PayFest measures up
PayFest was built against exactly these criteria. It runs fully offline — transactions queue on-device and sync automatically — and turns any NFC-capable Android phone into a terminal, so there is no proprietary reader hardware to rent.
Vendors onboard in minutes with automated end-of-day settlement; a live dashboard shows revenue by vendor, hour, and zone; and security is layered in with HMAC-signed NTAG215 cards, optimistic locking against double-spend, a fraud-detection engine, immutable audit logs, and role-based access. Attendees top up easily, recover lost cards, and cash out unspent balances — and one platform scales across unlimited events with organization-level analytics.