I am seeing more and more adventure athletes taking technology like a Go Pro or something like that on the trail with them.
I have a lot of problems with anything that is a distraction to what they’re really doing. I have seen many athletes stop to take a selfie, or try to get a panoramic shot and end up falling, or dropping their device.
Having a phone on a long course can be a life saver, and I am actually pro-selfie, when it is appropriate. For the athlete, I ask them to be aware of their surroundings. The others are on the course to test their bodies to the extreme and are not usually able to stop or get out of your way. They WILL hit you if you are in the way, and they will be pissed if they get injured from selfie stupidity.
Having basic rules about devices on the course is a great plan, as is having a simple guide to the rules about exiting the course to take images.
There is also the honest fact that metal objects are slippery when you are sweaty. Lots of things get jostled or dropped when you’re on any course. A thing in motion, likes to stay in motion. If you are jostling a phone that has no power to fly, gravity will connect and smash the shit out of that screen. Ouch!
That phone you are now running with has smashed glass, an irritant that can make you bleed. Not great, and FYI, flies love blood and can outrun even a cheetah.
I will tell the people who are walking or running the course on the very back end to look out for items like this that may have been discarded, dropped, or just flat out lost and we will put them in the lost and found at the end.
Besides, selfies are the BEST when they are at the finish line.