Taking minutes in a meeting is often necessary so you have a written trace of what was discussed but it is a tedious task that pulls your attention away from the live discussion. Why not just take a snapshot of the whiteboard and use that as the written notes?
This is a typical snapshot of a well lit whiteboard using an iPhone 5s.
It is still better than taking notes but now there is a free service that will clean up your whiteboard image and email it back to you as a PDF
All you do is send the picture to
NOTE: because you are emailing the picture, be careful not to send anything that is sensitive, confidential or that you wouldn't want others to see