I purchased the app while attending a conference and wanted to use it to scan name badges. The scanning codes looked similar to those shown on this apps info page in iTunes so I thought Id give it a try. I was unable make it read the codes as desired.
However, the application is configured to open a dialog window in the event of an error so that you can give permission for a "trouble ticket" to be transmitted to the publisher. I allowed it to send the exception message and received an email from the publisher about a day later indicating that the code I was scanning was not a type that could be read by the app.
Thumbs up for the support feature within the app and for the publisher response to the support notification via email.
Thumbs down for the publisher who didnt offer a courtesy refund after seeing that the software was useless for me. :(
The moral? Learn your bar codes before buying scanner apps.
DKinVA about Optiscan QR Code Reader