The next patron will get inspired by the returns and less staff handling is necessary. (Experience shows that approximately 35% are borrowed by the next patron).
• Fast check-in
• Easy to expand
• Stylish design
• Easy to use
• Multiple items simultaneous return
• Books immediately available for check-out
• Return outside manned hours
If you are looking for an intelligent shelves solution, which actually is a small library by itself, you should read up on the Libcabinet.