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Doh ... I wasn't thinking of NFC, sorry. I've never done an NFC payment in bitcoin.
But using my mobile phone Camera to pay an LN invoice obtained by QR Code -- I do daily. No physical contact.
PPP-adjusted GDP answers “how much stuff can someone in a country buy at that country's prices".
Just because someone in India pays the equivalent of $1 for medicine that you pay $25 for, doesn't mean their medicine purchase "essentially" caused $25 worth of economic activity to occur. I'm oversimplifying it but people misuse the PPP-adjusted GPD metrics in this manner.
Source:
https://www.ecb.europa.eu/press/other-publications/ire/html/ecb.ire202606.en.html