I usually take a photo of the candidate's work, but not to evaluate whether it is correct or not; I already know that. I take the photo primarily because the bo

I usually take a photo of the candidate's work, but not to evaluate whether it is correct or not; I already know that. I take the photo primarily because the board is about to be erased for the next candidate, and I want to make sure that my notes are accurate when I describe the candidate's strengths and weaknesses. Having a photo also allows me to compare the candidate's work against that of previous candidates, so that I can ensure that my interview process is well-calibrated. It is also a preventative measure, so that when a no-hire candidate sues the company claiming discrimination in hiring practices against whatever protected class they are in, I have more evidence than my notes and fallible memory. Fortunately I have never actually needed to use that.