Operations
A kitchen that survives a power cut.
KDS, printer fleet management and QR-coded refund evidence — built Android-first, with offline survival baked in and printer failures that never block order acceptance.
What Operations solves
Stop losing orders to Wi-Fi
The tablet keeps already-loaded orders on screen, queues status actions and replays when connectivity returns.
Stop reprinting blindly
Reprints are permissioned, audited and tied to the same QR token envelope as the original receipt.
Stop arguing with disputes
Every receipt carries a signed, kid-rotated QR code that links a refund event back to the canonical order.
KDS
New orders in under two seconds.
New order to KDS in under two seconds at p99, audible alert until acknowledged, one-tap accept/reject. Offline banner inside 60s of connection loss.
- p99 < 2s webhook to screen
- Offline-survival queueing of status actions
- One-tap accept, reject, prep transitions
Printing
Epson + Star, LAN-first, Bluetooth-fallback.
The tablet is the print client — no separate print server, LAN bridge or cloud print service in MVP. Failures never block order acceptance.
- Epson ePOS + Star StarIO10 driver coverage
- LAN primary, Bluetooth fallback, USB best-effort
- Per-printer attempt log with retry semantics
Evidence
A QR code that wins disputes.
Every receipt embeds a signed QR token tied to the canonical order. Refund events are evidence-linked end to end.
- HS256 signed token with `kid` rotation
- Replayable verification endpoint
- Refund-event chain back to raw payload
Supported integrations
See the kitchen on the worst Friday of the month.
Bring a real order, a real printer, a real refund. We will run the full pipeline live.