At least that’s the theory. In practice I have yet to see a 7-11 that took bitcoin.
One of the (many) factors that are influencing the current spike in BTC price is the fact that Japan has recognised BTC as legal tender. Expect your local 7-11 in Tokyo to start accepting BTC soon.
Some recent progress towards BTC POS sytems..
http://www.coindesk.com/information/bitcoin-retail-pos-systems/
Big takeaway: It is a ‘chicken and egg’ thing.
I don’t know about any 7-11s but right next door to the 7-11 may be an ATM....
https://coinatmradar.com/bitcoin-atm-near-me/
Put in your city. I bet you will be surprised.