No one likes to carry big luggage while exploring. Coin lockers are very useful and can store your stuff temporarily. Coin lockers are equipped in both JR and private railways and subway stations in Japan. Please make sure you pick up your stuff within a day or so (storage time depends on the locker). Coin Locker Babies is a Japanese novel based on a new born baby who was abandoned in a coin locker. This shocking case got so much attention.