Fyldewhite
Tour Winner
Exactly my point. Now that a DMD with non-conforming devices is allowed we have opened the door to apps that use the information the non-conforming devices on the DMD provide. As a result we have a new rule that will become unenforceable in the context of apps that integrate that information with current position and map information.
So what you are saying is that players who own mobiles can't be trusted to use them and not break the rules? You can't stop somone having a compass in their bag either, you can't stop someone using a DMD when there's no local rule, you can't stop someone kicking a ball out of the rough.......... Golf rules aren't generally enforced, they are observed. I'm pretty sure any breaches will be rare just like with any other rule.