Ok, so I got a square reader for my new android phone this week and got it all set up for my business. I have looked around on here but really did not see what I wanted as far as an answer. Does anyone use strictly credit cards for payments or almost all credit cards. I do have some elderly customers that always pay cash or checks but want to lean toward cc's just due to not having to cash all those checks. I would like to run authorization on each cut with a card number on file but I am not sure if I can get customers to keep a card number on file with me due fear I may just charge whatever I want, even though I am an honest guy. I was thinking of a marginal discount for customers that keep a number on file just to ease my billing and reduce headaches. I was also thinking of requiring habitual slow pay customers to either have a cc number on file with me or I will not cut. I figure it will get them to pay or they will just find another service and end my headache with them. Comments, suggestions, bad idea, good idea?