My understanding from the App Attest wwdc session is that we store attestation keys in keychain on a per-user basis. For apps that don't require user login, I'm thinking of using StoreKit's AppTransactionID [1] as the identifier to discriminate keys. Do you have opinions on whether this is a valid pattern? [1] https://developer.apple.com/documentation/storekit/apptransaction/apptransactionid

Apple has provided a number of Swift Packages for backend development, including some new tools for wallet passes! Is there anything like this for attestation and device check capabilities for a swift-on-server product to consume? If not, consider this a placeholder for a future feedback request.

Hi! I have not seen this year's video yet, so please forgive me if this is answered. I notice a couple of folks here saying that AppAttest is (at least partially) supported on macOS 27. Is this correct? My specific use case is a "designed for iPad" app running on macOS. We use App Attest to make high-value requests to our headend services and would really like this to work on macOS as well.

Since device check APIs (attestation) are not available for extensions like share extension and widget extension (at least in 26 and according to documentation still in 27) - is there any best practice how to still protect endpoints which are also called from these extensions? And subquestion: is there a technical limitation in iOS design that made it impossible to also support extensions.