how do you version control the white board? We have a magic white board that can print out a big piece of paper showing everything on it. We also take pictures

how do you version control the white board? We have a magic white board that can print out a big piece of paper showing everything on it. We also take pictures of it (and lesser white boards) to record designs agreed. Those pictures generally get put into a formal design document that is reviewed, signed, approved and all the rest of it.