Available from the Business plan. In My cards → Customize → Options → Geolocation:
- Detect your position or enter latitude and longitude, then the radius (100 m maximum; Apple keeps the smaller of this radius and its own).
- Write the text suggested for the lock screen.
- Save, then "Refresh on iPhone" to send the card back to the iPhones already registered. The number shown corresponds to requests accepted by Apple, not to proof of delivery.
On the customer's side, the iPhone must allow location access for Wallet and display on the lock screen. Apple decides when to show the suggestion: run a test on site with your own iPhone. On the Multi-site plan, each location has its own position in Locations.