I tried (and paid for) two similar apps, but both crashed when the barcode for a book in a series didnt give enough information. This app prompts you to enter the ISDN with a number-only keypad if it cant find the right book based on the scan.
Downside: the multi-scan feature is a waste of time. Its too quick on the trigger, and rather than prompt for an ISDN, it simply picks some title and author that have little to do with the book being scanned when single scan mode prompts you for the ISDN.
Asdf1955 about iCollect Books: Library List