For the store employee
A guided phone flow: pick a category, scan the vendor's UPI QR, enter the amount, review, pay. Their own limit is shown before they start, and any bill they still owe is on the home screen.
- One question per screen — no training required
- QR scan, or pay a UPI ID directly
- Bill photographed at the counter, queued if the network drops
- Sees only their own spending