In 6.1, someone had created an add on that while during the checkout process, if you scanned a barcode that was a user's I'd barcode instead of a book barcode it would bring up that member's page and be ready to check out a book for them.  (I believe it was called  self checkout).  This functionality is wonderful especially when dealing with small children (kindergarten & such). It was also helpful when you have many people in line (speeds up processing) as you just verify that the screen has the correct checkouts and then just scan the next member's code.   Thanks for all the work you all do