What a great app, I tried it several times already!
However, it hasn't begun as expected...
When I used the app for the first time, I had a guy, probably British but that doesn't play a role for me, who was complaining that he couldn't see me. In the background, I heard some people laughing. All right, I turned around my phone and then told him about an iTunes card I had on my table. I was just testing this app, and the card, as far as I knew at this time, had already been used. So I just wanted him to read the code, he was instructing me how to hold my camera, then he said something like "Yeah, now I can see it", and disconnected.
Not quite sure whether it was my internet connection which interrupted for a short time, but when I then tried to call another volunteer, I was waiting a few minutes and nothing happened.

A few days later, I gave it a nother try, which worked just as expected.
The guy could tell me that it was an iTunes card which has been already used. Then, I showed him a closed package and he corrected me several times to hold the camera right. He first was assuming that the package provides a firewire cable, but after putting my hand a bit to the left, he could recognize that it was a micro USB cable.
This app is just awesome, and I would love to see this service growing! I would also apreciate multiple languages. I selected German and English as my languages and so far, I only got English speaking volunteers. I can imagine that, since the service is still growing, there are more English people than for example German people, so I hope this'll change soon.

Perhaps I'll do that, if something simmilar is ever gonna happen again, but is it an anonymus reporting?
And do other languages actually work right about now?
EDIT: I tried it out yesterday, and to my biggest surprise, they even provide other languages yet.
It's strange, because every first time I try out a language, I get strange people!
First, someone picked up and I heard people talking, but when I asked for help, nobody answered me or was far away from his/her phone. The volunteer disconnected, and the second time I got my help.
It was a Dutch lady who helped me recognizing a couple of papers, at least the headings, so I knew how to sort them.