I've actually used the "attack" in the article to design a P2P Bitcoin exchange based on the idea of using someone else's contactless card (with permission) in exchange for Bitcoin. This would solve one of the big issues in exchanges today - that is the fiat escrow handling.
There's a demo for a quick PoC here https://www.youtube.com/watch?v=ZsOzeELdjxM . It makes me sad that they're closing this, the fraud potential was really small (as the article implies).
There's a demo for a quick PoC here https://www.youtube.com/watch?v=ZsOzeELdjxM . It makes me sad that they're closing this, the fraud potential was really small (as the article implies).