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Android zero-tap sign-in restoration: comparing approaches for self-hosted apps #17613

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@TimoPtr

Hi I'm one of the maintainer of the Home Assistant Android app! We’re investigating Google’s upcoming zero-tap sign-in restoration requirement https://support.google.com/googleplay/android-developer/answer/17492799?#zero-tap_sign-in_restoration for Home Assistant, which takes effect in April 2027.

Have you already looked into supporting Restore Credentials in NextCloud? Since both projects connect to user-hosted servers, we might face similar challenges around RP IDs, domain association, and instances that are only accessible locally or without HTTPS.

We’re tracking our investigation in this Home Assistant discussion. We haven’t settled on an approach yet and would be interested in comparing notes.

This isn’t a bug report or a request for an immediate implementation, just an opportunity to share findings on a requirement that appears to affect both projects.

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