Let put ourselves on the shoe of the owner. In my cognitive evaluation on veracity of bitcoin popularity and numbers there is a big market if I do accept bitcoin as payment and option for a better marketing strategy but the government is not declaring it legal and how would do I compute the taxation.
Well, if its POS, I believe you can pay with Bitcoin. Just use your Bitcoin wallet debit card and the payment will be made straight from it. Anyone that wants to spend with Bitcoin should go for the Bitcoin debit card, thats it.