Who needs screenshots?

At my first job in a web agency, we had this client who wanted to make some changes to his website and sent them to us by email. So far nothing unusual ... until I opened the email. To show us the changes he wanted to make the guy has done these steps:

1) He took the picture of his PC screen with the smartpone
2) Printed the photo of the screen
3) He made some pencil scribbles on the paper with comments like "Here we change the font, here we change the color" and the arrows that indicated where to move some blocks of the layout
4) Then he scanned the sheet with scribbles and sent it to us as a pdf by email

Of course, all our attempts to explain how a screenshot works have been useless and he went on like this for weeks