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House/flat number + street is usually enough. No name needed to look up.
Each person at this address gets their own stamp card.
0 of 5 items
No customers yet
Add a stamp for someone at the Counter tab to start their card.
Shop details
Customers get the reward after this many stamped visits.
Shown to staff when a customer's card is full. Written in plain terms — say exactly what they get.
Your data
Customer names, addresses, and stamp counts are stored in the cloud (Firebase), not on this device — that's what lets every till see the same cards. It also means this is no longer a zero-data app: back it up, and keep access to it deliberate.