I'll wager Apple will shut this down or reject apps that do this.
If you're going to do this you have to consider the ramifications of how stale the information on the card becomes over time. The example, showing a "Checked in since..." will become stale if someone checks in/out on another device.
A real iOS 7 API to update these cards in the background would be a nice addition.
If you're going to do this you have to consider the ramifications of how stale the information on the card becomes over time. The example, showing a "Checked in since..." will become stale if someone checks in/out on another device.
A real iOS 7 API to update these cards in the background would be a nice addition.