Heya,

Due to a disability, I have trouble handling cash. Even fumbling with a card is hard, when you’re on the spot at a register. I was looking into NFC Payment methods. Obviously GPay and Apple Pay are both terrible and unreliable when you are in a habit of using privacy respecting software (as much as I’ve commited to it).

I also don’t want to rely on a phone or watch for money. So that leaves offline tags (bracelets, rings, etc.). My bank happens to offer digital tags, you can put on most major NFC-wear providers (Fidesmo).

From my own research, some of these providers take your card-details when you buy the wear, “burning” the tag-info into the wear permanently before delivery. Others let you use a proprietary app to program and modify the tag-info on a wear, like a programmable NFC-tag. Yet others use an App to link your card-details to an online-account, allowing you to remotly set and revoke the tag-info, as the wear just contains an ID linked to that account.

Are there any resources on how these wearables impact the privacy of payment-data, or what paths that data takes during a payment? For the provider I wanted to use, I found a privacy policy for the website and one for the app, but none for the wear.