How it works

A box in the shop, a portal in the cloud, and no single point of failure in between.

1. 01

   The appliance

   A small Linux box sits on the shop network next to the printers. It dials out over HTTPS and one WebSocket — nothing dials in, so no firewall rules and no port forwarding. USB printers are detected automatically and matched to a signed compatibility package.

2. 02

   The QR sign

   Each location, printer, room or campaign gets its own QR code with a random identifier. Print the PNG, the SVG or the ready-made sign, and revoke a code the moment it leaks.

3. 03

   The customer

   They scan, upload, see a preview and a price, and pay. Only options the printer actually reports are offered, so nobody buys stapling from a printer that cannot staple.

4. 04

   The print

   The job is encrypted per-job and sealed to that appliance. The appliance prints it and reports back what the printer said. A download is never treated as a finished print.

5. 05

   When the line drops

   The appliance keeps printing queued and cached jobs, keeps taking cash, and records every transaction locally. When connectivity returns the events sync exactly once; anything ambiguous lands in a review queue instead of being guessed.

6. 06

   Afterwards

   Documents are kept for the retention window — 48 hours by default — so staff can reprint, retry, move or recover a job. Then the keys are destroyed and the content is gone; the transaction record stays.

Questions about a specific printer or site? Talk to Reamstead.