Darryl, you posted this topic twice with the exact same content so I deleted one of them.
Anyway not sure what this member was on about, any of Apples OS's is not going to control trains by themselves, you'd need an application to control whatever control system is in use (RailPro, DCC or whatever else may come along in the future). For DCC that already exists with an application for Apple's iPads and iPhones. For RailPro a lot of people are still (and are going to for a long time) waiting on native Apple compatibility. Some others are using the workarounds in the meantime.
As for direct to locomotive wireless control of N scale, people will be waiting a long time for that too. Nobody has done that, not even in DCC.
- Tim