MusiCards can be read by any smartphone and usually requires no special app.
An instruction graphic can be printed on the back of the card.
Most modern Smartphones support the tap to play function via Near Field Communication (NFC). In case NFC is not available or would need a special app, it is always possible to scan the QR code.
MusiCards supports most streaming services and has been tested with Spotify, Apple Music, Deezer, Google Play Music, YouTube Music, Amazon Music, Tidal, Qobuz and Napster. It also works with other cloud content types like YouTube videos, recipes or games.
Yes, it is possible to stream to your home stereo through Spotify Connect, AirPlay, Chromecast and Bluetooth.
You can also expect a special MusiCards Player device for your home soon.