Coin lockers are one of those very "Japanese" mechanical items that seem to encaptulate something of the essense of everyday living in Japan, like vending machines and pachinko.
Coin lockers can be found at many large stations and some department stores. Ginza Mitsukoshi even has refrigerated lockers to keep your groceries fresh.
As well as coins, many of the lockers found at Tokyo's stations can be paid for with a Suica or Pasmo card.
Ryu Murakami's novel Coin Locker Babies tells the story of two boys found abandoned by their mothers in coin lockers at the same Tokyo station.
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