Or (if subway has wifi) see the ad, google it straight away. I don't think I've had a barcode reader app installed for a couple of years. I checked out one or

Or (if subway has wifi) see the ad, google it straight away. I don't think I've had a barcode reader app installed for a couple of years. I checked out one or two QR codes for the novelty when I heard about them but the novelty wore off quickly.