The advantages of Cash Register Application:
1. Easy to use
2. Available stock calculations, sales reports, purchase, income, and summary selling report
3. You can download CSV report which can be analyzed further.
4. This app can scan barcode without any additional barcode scanner
5. This app can print receipts using a bluetooth printer
6. You can set your own currency based on your location such as Rupiah, dollar and so on

Complete instruction can be read at Slide Share: http://www.slideshare.net/gantengmaut/cash-register-57232824