I translate my question into English so it should be easier for you to reply.
I puchased this good app and I noticed that the camera doesn't read any type of barcode. I have to enter the barcode number manually. I restarted the phone multiple times and unistalled and reinstalled the app, but the problem persists.
My phone is a Samsung S4, model GT-9505, Android 5.0.1.
Could you tell me anything?