Super proud to showcase Foqos! I wanted to create a way to physically block apps on my phone, always had a bunch of NFC tags, combined the 2 together over the holiday break and Foqos was born. You can create profiles, write them to NFC tags and track your weekly focus.
Its completely open source and will always be free! There is an affiliate link in the app for nfc tags and donations are completely optional
Can't you switch profiles on your phone without scanning an NFC tag already? Couldn't your app allow profile switching without requiring any NFC tags?
It's not clear to me what the NFC tags add to this experience.
I've done a lot of thinking about cyberphysical art that used to look like
https://mastodon.social/@UP8/111013706271196029
and now look like
https://bsky.app/profile/up-8.bsky.social/post/3lbqfh7pesc2x
Notably with the QR code on the back I found people didn't understand the branding of the card and had to flip it over to know the affordances it offers which didn't work when the card was stuck to the wall, as in
https://bsky.app/profile/up-8.bsky.social/post/3lbftgz6kok2c
I researched NFC tags as an option here and bought a 100 pack and a Sony FeliCa reader but found the problem of "communicating the affordance is available" was much worse, there's no standard logo (except one that belongs to the banks that they wouldn't give me permission to use) and not much awareness. I was irritated that NFC support is limited in iPads, for instance. So I stuck with QR codes that people understand.