The person who write that article did not even mention electrolysis (especially for those with light hair on their backs.) Geesh

I knew someone who had the same problem and had no one to help them shave their back. Their solution was simple and might be worth a try: attach the razor to a stick or straightened coathanger, and stand with a mirror behind you if you can. Reach behind like a backscratcher or bath brush and shave. I am lucky I can reach behind and reach every area on my back with little problem.