Would you trust me?
Granted, we've never met, but I was inspired by the question posed by @lotsofgoats. There are a lot of garage sales this time of year where I live. Whole communities advertise them including mine later this month. I was thinking of participating and accepting payment by credit card. There are a variety of companies that provide a free card reader to use with their app and your apple or android device (https://squareup.com/ or https://www.paypal.com/webapps/mpp/credit-card-reader are a couple examples). I got the square version and thought that for a 2.75% charge, my garage sale may have a bit more success. The real question is: are people too concerned with security to trust something like this yet? I'm sure down they road they will become more standard, but is it too new and scary? Has anyone seen anyone else try it?