The Smart Key app on iOS allows you do see your shared keys usage logs by keys and persons.
Enter the sharing page for a specific key and press “Show shared keys log”. This will display all of your guests’ usage of this specific key, ordered by date.
If you want to view a single person’s usage log, tap the user in the “Shared with” list and tap Usage log.
When and how usage logs work?
Every time your guest connects to your Smart Gate device, the event is saved on their phone. If this specific phone has Internet connectivity, the usage log will be synced to your phone immediately. If not, it will be sent to your phone the next time it has Internet connectivity.