Huh. I've rarely used contactless payments, because the contactless receivers always seem to be broken or not supported by the merchant's software. Also, when AmEx issued me a card with a chip a couple years ago, they removed the contactless feature. Since it was a transparent card I could see pretty clearly that this was a physical interference issue, i.e. the contact chip went in the same place that the contactless one used to. From that I got the impression it was a dying technology, but maybe that's only true in the US.