QR Codes for Loyalty Programs: Earn, Redeem, and Stamp Card Designs

1. Two Common Patterns

* Customer shows code: The member app or wallet displays a QR with the member ID. Staff or a fixed reader scans it to credit points. * Merchant code at point of sale: The customer scans a static or session QR. The server links the scan to the signed-in member account and credits points.

2. Security

Member codes should include a rotating TOTP token or a signed timestamp so a screenshot of the code cannot be replayed indefinitely. Check code freshness on the server side.

3. Digital Stamp Cards

A simple version: each scan adds a stamp entry in a database; no NFC or app needed. The customer presents a phone number or email and the merchant scans a campaign QR. Track eligibility server-side.

4. App-less Entry

For small businesses, a campaign QR linking to a web form with the customer's email can substitute for a full loyalty app. Keep the form short and the reward clear.