424 comments on the Facebook page currently. Most of them frothing at the mouth.

People just have to respect the rules of the race organisers or race elsewhere, I can't see the issue.

I'm racing today where carrying (but not specifically using) a GPS is compulsory. I'd prefer if they were not allowed, but that's the rules of the race, so be it... and I'll sure as hell be using mine after 80 miles going into a 2nd night wth no sleep.