TL;DR A top Android tinkerer has confirmed that you’ll lose app casting capabilities if you root your Googlebook.
This is apparently because your Googlebook will no longer pass hardware key attestation.
Googlebooks have been on the market for roughly a month now, and they have a few selling points. This includes deep Gemini integration, a variety of cross-device features, and Android app support. Unfortunately, it looks like you’ll lose out on one key feature if you choose to root your Googlebook.
Magisk creator and Googler John Wu has confirmed on X that you can’t cast apps from your Android phone to your Googlebook if the laptop is rooted. The developer explained that this is because the phone rejects app casting if the Googlebook doesn’t pass hardware key attestation.
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