Browsing PlugShare it appears that I should get a membership to either ChargePoint or Blink, or you can just use your credit card at the port?
Chargepoint L1 and L2 stations (
Data Sheets & Installation Guides - ChargePoint) don't have magnetic strip credit card readers. They probably can read ones w/a proximity/RFID chip inside (e.g. my Discover card). I've never tried, as I heard that was unreliable anyway and I've never paid a penny for Chargepoint charging.
I've only used their RFID (-style?) cards, of which I have two. 99% of their usage is to charge at my work (free). I've used them a few times on free Chargepoint stations.
When I joined, the min amount you can put on your Chargepoint account is $25. If you put nothing on it, then you'll have to go thru the trouble of adding $ when you need to, possibly getting on the phone. (I've spoken to Chargepoint support a few times to report problem stations.)
I know little about credit card processing fees, but I suspect if they readily accepted cards, they could be hit w/per swipe processing fees, possibly totally blowing any chance of even breaking even on short/cheap charges.
As for Blink, I have a membership, their card and and have $0 on my account. I've used their stations 0 times.
If you have a smartphone, I'd download the apps for all the charging networks (e.g. Chargepoint, Blink, etc.) and login, as well.