Write a proposal of not more than 650 words that evaluates the operational, technical, and economic feasibility of these kiosks. 

1. Draw use-case diagrams that illustrate how a patron would interact with the kiosk. These diagrams should illustrate all of the interactions in enough detail to derive functional requirements for the kiosk. 

• Assume that all materials and library cards carry a unique bar code. 
• The patron should have the option to receive a receipt for items checked in or out. 

1. Write sample instructions on how to use the kiosk. The library intends to post these instructions on a sign next to the kiosk, so they must be short (not more than 350 words), clear, complete, and well organized.