That is cool.
I offer my farrier clients 10% off if they pay in bitcoin. It seems to be a win-win because I just hold it and it continues to go up. There are a couple of point-of-sales software systems that people can use now (such as vendors). If you don't beat me to it, maybe I'll look into that for post.
Ooh, a farrier! Not every day you see one if them. I'm a welder.
A crypto point of sale you say? Research is needed. Though I don't imagine it could be as convenient as a smartphone could it?