Not reliable
I downloaded this app because I have a vision impairment I wanted to be able to identify books in my library using the UPC on the back half the time this thing can't even recognize there's a UPC in front of it I'm very careful hold the camera very still and have a clear image and it will never recognize the UPC half of the rest of the time it recognizes the UPC incorrectly and says it's a different book than it actually is this app just isn't worth it