
Japan has the highest number of vending machines per capita with about one machine for every twenty-three people. The majority of machines in Japan are stocked with drinks, snacks, and cigarettes but sometimes a person finds vending machines selling items such as bottles of liquor, cans of beer, fried food, underwear, iPods, live lobsters, fresh meat, eggs and potted plants. In Japan, vending machines are known as 自動販売機 (jidō-hanbaiki) from jidō, or "automatic"; hanbai, or "vending"; and ki, or "machine", 自販機 (jihanki) for short.
Vending machine services such as Osaifu-Keitai allow cell phones to be used to pay for stuff bought from these vending machines more easily.
Info from wikipedia.