A few years ago a number of local artists set up a display at the Creston Rec Center as part of a Wine/Art event. When I questioned how we were going to handle sales (if any), two of the ladies pulled a little square gizmo out of their pockets.
That was my introduction to Square!
All you need is a Square reader and an internet connection for you to use your smart phone, Iphone or tablet to accept credit cards for your sales. There are no monthly fees; just a small percentage paid for each transaction - if you don't use it, it doesn't cost anything. You will need to have a reasonably up-to-date version of Android on your device but that is about it!
I admit that I didn't handle signing up for my Square - my husband did it - so I don't know any of the details for that but from what he said it was a piece of cake.
My problem is a bad memory for technical things. I don't get a lot of visitors to my gallery because I am not on a heavy traffic route so I haven't had the chance to use my Square very often. There were a few occasions where I messed up trying to use it so I finally typed out a little instruction sheet that I keep with my reader.
At any rate, the Square has been a bonus to my gallery and I recommend it to everyone. After I got mine, I suggested a friend with a B&B try it; she did and has used it numerous times with no problems at all. Then I recommended Square to my hairdresser and now she uses it too!
Today, I got an email from Square with a special offer to any friend who gets Square on my recommendation through this link - squareup.com/i/1572B3D9
If this link doesn't say something like "Mellowood Studio invites you...." please go to my Facebook Page and find my post there and use that link because I get a deal too if my friends sign up. - https://www.facebook.com/val.vanderpoel
I hope you will check it out because it will increase your chances to make sales.
PS> There are a number of ways to use square that don't require the customer's presence or physical card but I haven't tried them so I can't offer any advice.