A couple months ago, we purchased a Koamtac KDC200 wireless handheld laser barcode scanner to sync with our smartphone. We've gone from manually entering book's ISBN numbers into sites to look up the value of books on line to scanning many ISBNs in a short period of time. This has not only increased our productivity but our income as well. The folks at IDScan.net put us on to this little device and we're grateful. Check it out!