Do you have collection of books or CDs that have barcodes? This app uses barcode scanner to scan and check in. When you lend the book or CD to other people, you then scan and check out. This provide a way for you to keep track of your books or CDs. At any time, you can know whether a particular book or CD is checked out or checked in.Tap scan to scan barcode. Tap Check In, Check Out accordingly. Tap Menu->Search to see all the data. Tap Export to save the data to sdcard as csv file.To see only data specific to a book or CD, tap scan to scan that book or CD barcode and then tap Item Status.Important points to note: - This app make use of the popular Open Source ZXing Barcode Scanner app for scanning barcodes. This app must be installed PRIOR to using this app.- If you did not install PRIOR before-hand, an alert dialog will pop-up to ask you go to Google Play to download.The application support English, Simplified Chinese, Traditional Chinese display.