For a while I stopped bringing cards to situations where a card would be a thing and instead I put a QR code on a widget on my phone's lock screen and told people to just scan that to add my contact info.
Results were... mixed? For a few people it was a cool conversation starter. Others fumbled a bit with what to do.
One guy, though? He was NOT amused. Apparently he made a big point of collecting all of his connections' cards in binders, and cataloguing them, both as bragging rights and a hobby. I may as well have walked into his house and peed on his stamp collection. It was very awkward.