Wallet programs are measurable from day one. Focus on metrics tied to customer actions, not vanity counts.
Installs and active passes
Track how many customers added a pass and how many remain installed month to month.
Scans and earn events
Scans proxy for visits or purchases when staff validate at checkout.
Redemptions and completion
For stamp cards, measure full-card rate and time-to-reward.
Notification-attributed visits
When possible, correlate location surfacing and campaigns with scan uplift.