Love this. What are you tapping the cards onto? What is reading that info and then pulling the music? (I'm not super savvy and can't figure it out from the writeup).
On iPhone, tapping an NFC tag with a URL opens a popup that allows you to navigate to that URL with a single click. If this URL is supported by an installed app, this app will handle this. For example, if you write a URL of a Spotify playlist onto your NFC tag/sticker (which you can also do from the phone via an app like NFC Tools), then bring that sticker to iPhone, it will show this as a Spotify URL, and you can tap on this notification and go to that Spotify playlist. So all you need to experiment with is a writable NFC tag and your phone, no other hardware required. I bet Android phones offer a similar experience.
that’s the right question! i’m surprised no one has asked it yet. part 2 will be all about setting up the raspberry pi with an nfc hat and a ‘read-only’ display as the tap target.
I just assumed they were tapping them on their phone and had some kind of app, or website something
no middleware/app needed. PlexAmp can deep-link to an album with an autoplay parameter, as long as the device with the NFC reader can access it.