I describe that in the article, but here's the short of it: iOS: You have to use Cordova plugins. I used RemoteCommand[0] and NowPlaying[1] that lets me write

I describe that in the article, but here's the short of it: iOS: You have to use Cordova plugins. I used RemoteCommand[0] and NowPlaying[1] that lets me write JavaScript that calls into native iOS functionality. Once the Cordova plugins are installed, you write JS to talk to them. Source code for that here[2]. Android: Google has submitted a web standard[3] for this. Integrating with it is simple[4]. Windows: Microsoft automatically injects the Windows API into the JS global namespace. So you write JavaScript that looks like window.Windows.Media.SystemMediaTransportControls.doSomethingHere(). You can see the code for that here[5]. [0]: https://github.com/leon/cordova-plugin-remotecommand https://github.com/leon/cordova-plugin-remotecommand [1]: https://github.com/leon/cordova-plugin-nowplaying https://github.com/leon/cordova-plugin-nowplaying [2]: https://github.com/JudahGabriel/Chavah/blob/master/Chavah.NetCore/wwwroot/js/Services/IOSMediaSessionService.ts https://github.com/JudahGabriel/Chavah/blob/master/Chavah.Ne... [3]: https://developer.mozilla.org/en-US/docs/Web/API/Media_Session_API https://developer.mozilla.org/en-US/docs/Web/API/Media_Sessi... [4]: https://github.com/JudahGabriel/Chavah/blob/master/Chavah.NetCore/wwwroot/js/Services/NavigatorMediaSessionService.ts https://github.com/JudahGabriel/Chavah/blob/master/Chavah.Ne... [5]: https://github.com/JudahGabriel/Chavah/blob/master/Chavah.NetCore/wwwroot/js/Services/UwpNativeAudioService.ts https://github.com/JudahGabriel/Chavah/blob/master/Chavah.Ne...