What are some alternatives?
When comparing Scan QR Code Reader and QR Droid, you can also consider the following products
Barcode Scanner - Barcode Scanner for Android
QR BARCODE SCANNER - QR barcode scanner is the fastest and most user-friendly for scanning barcode.
QuickMark - QuickMark makes everything possible.
Obsqr - obsqr is an open-source, fast and lightweight QR scanner for Android.
MKH Barcode Reader - This tool can be used to scan QR codes on your PC or tablet. Note: a webcam is required.
ZBar bar code reader - ZBar bar code reader