I have to read numbers scratched and stamped on metal. Sun is the best for seeing what is there. When smart phones came out I thought i would be smart and take a picture and read it from there. It happened one time, that's it. I couldn't believe it, it was maybe 15 years ago. The phone interpreted it wrong!!!!!! It drew what wasn't there. When the numbers are wrong nothing works. Digital is pre-programmed, it cannot be true.