Sorting in its most basic form. Often it is said to us, that searching for items in libraries takes alot of time, reservated books, items from other branches. For this reason we developed the TwoBin, why look for items on shelves when most of them are beeing handed in by customers. In most small libraries people are used to hand in the items at the front desk, this intake is handled by library staff and is quite fast. So the TwoBin had to match this speed so that the people need not wait longer then they were used to. At the same time the TwoBin had to filter the exceptions like reservations and other braches out of the items that were handed in. After building a number of prototypes, the TwoBin was born.