Ok, perhaps you can get right direction
Underground of Tokyo station is very complicated, unless you know exact exit, you would be lost, absolutely !
Yes, I was lost before, dear me…
QR code offers you the information around there.
In Japan, these days QR code became popular than last year.
Many websites offer their mobile sites with QR code, and you will see advertisements in a train also place QR code on.
But, it is a bit weird using your mobile phone’s camera in a train, isn’t it ? At least I can’t do in the packed train !!
