In my experience this seems to be much less of a problem now with contactless payments, in both directions. US cards that used to require swipe-and-signature or chip-and-signature instead of chip-and-PIN seem to just work in when tapping (at least in the 3-4 countries I’ve traveled in extensively, although contactless isn’t widely accepted in some countries) and cards from a few European countries seem to work with contactless which is finally increasingly widely adopted in the US.
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In my experience this seems to be much less of a problem now with contactless payments, in both directions. US cards that used to require swipe-and-signature or chip-and-signature instead of chip-and-PIN seem to just work in when tapping (at least in the 3-4 countries I’ve traveled in extensively, although contactless isn’t widely accepted in some countries) and cards from a few European countries seem to work with contactless which is finally increasingly widely adopted in the US.