What are some alternatives?
When comparing ConnectUpz and Barcode Scanner, you can also consider the following products
QuickMark - QuickMark makes everything possible.
MKH Barcode Reader - This tool can be used to scan QR codes on your PC or tablet. Note: a webcam is required.
Obsqr - obsqr is an open-source, fast and lightweight QR scanner for Android.
SecScanQR - The QR-Code Scanner/Generator that cares about your privacy
QR Droid - QR Droid Zapper
ShopSavvy - Shopsavvy title.