I am creating my custom app for station duo 2 in which before making any charge or payment, I have to fetch card owner's information by only providing card information (i.e card 16 digit number, cvv, expiry mm/yyyy). I am not using clover's customers, inventory and orders. All these things need to be managed in my own data source. Should I use Clover SDK or REST API to fetch required information?
Can above scenario be testable on the emulator?