Android’s physical navigation buttons are back on Googlebooks, but not the way you think

Googlebooks have reintroduced physical navigation buttons—back, home, and app switcher—modeled after the classic Android 5.0 interface. These keys aim to improve usability for Android apps that are not optimized for desktop environments.
Why it matters
This design choice reflects a trend of integrating mobile-first interface paradigms into desktop hardware to bridge the gap between different computing platforms.
A common misconception I’ve seen with Googlebooks is that the Quick Insert and Google logo keys are new. They’re not, as they first debuted a couple of years ago on some Chromebooks. But there is something new for Googlebooks that’s ripped straight from Android phones circa 2014.
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