I'm not sure I understand you correctly, but the browser you are using can be ascertained with JavaScript or a server side script.
No, if you don't have Spotify it asks you to download Spotify and log in.
I'm not sure I understand you correctly, but the browser you are using can be ascertained with JavaScript or a server side script.
No, if you don't have Spotify it asks you to download Spotify and log in.