@themaayur
You have to ask for CAMERA permission and grant it to your app, I can ask for CAMERA permission from inside the extension, but I felt to leave this option for the koder, and regarding the blue color around the scanner view, I will add new blocks for controlling it’s color and opacity and other blocks for fully controlling the scanner UI.
@rizu
The error is fixed now, in two days I will post version 2.1 with issues fixed and full blocks for controlling the scanner UI.
@Rogerio_Rios Thanks 
@WatermelonIce @Taifun Thank you for reminding me, it will be fixed
@Peter Done! 