Japan is no question the vending machine capital of the world. You can buy almost anything from a machine in Japan but I think they’ve taken things a little too far. I can’t say for certain this is legitimate but it sure looks like it is. It appears to be an unattended machine where the conscientious Japanese can stop and donate blood on their way to wherever they might be headed. I guess you just stick your arm in and push a button. Maybe it just tests your blood for type or something.