Im a bit of a noob. I know for RC stuff, if you are racing with others, normally you'd switch over to another frequency band so you prevent cross talk between competitor controls-vehicles.
For arduino using RF communications, what are the methods you would use to prevent similar cross-talk scenarios in an environment where there may be more than one similar device also using the same wireless frequencies trying to communicate? I guess one method may be the baud rate but you are still limited there and sometimes you can still get cross talk by picking up the data. So what method do you suggest?
Encryption? Appending special start and end data that must be recognized to register a dataset? How does the receiver pull the correct signal in an environment drowned with the same frequency signals?