I carry some because it’s no longer a thing. My card has only the information that I know will not change: my name, email address, and mobile phone number. On the back there’s a QR code.

I hand out perhaps one per month so not super often, and many times the most appropriate thing to do is to simply tell people my phone number. But sometimes, especially when we’re in a situation where phones are not nearby, it’s quite effective to hand over a pre-made card with that info.