> what alternatives do you recomend?
Are you trying to get just users, or are you doing a pay2play game? you have alot of different options you dont have to use QR code, for c3, i managed to read QR code with a html script but i use the plugin HTML elements for that, as i said, you have alot of ways to do this you dont need the plugin from c2. If you set your c3 to c2 runtime and download the link above you should be able to read qr.
Sami did you tryed the converted plugin??
Or can you send me the example of the example that you did using html elements?