A trunk room is rented storage for items you don't often use but just can't throw away. But it's not always easy to keep track of inventory or pick up possessions when you need them. Hayato Matsuzaki launched a service using couriers and carefully photographed cloud-based galleries of stored items to give users round-the-clock access to possessions at the click of a mouse or the touch of a screen, and even letting you give new life to items you no longer want by putting them up for sale.