During a quick “binding” process, a button on the receiver and one on the transmitter are pressed so the two components can be synchronized, and that ensures that the receiver will recognize only that transmitter. It only takes a moment. It’s wise to be aware of other people binding their receivers and transmitters in the immediate vicinity, but the chances of a mix-up are slim. The binding range is only 5 to 6 feet, and someone would have to be in exactly the same stage of the process in order for your receiver to “listen” to the wrong transmitter. If there were a problem, you would just have to rebind your system.
Or maybe I'm wrong, I also experienced trouble on my DSM before.