why multiple people can use wireless earbuds in the same space without interference?

Question

I had this thought just now at the gym. I noticed multiple people, myself included, using wireless earbuds during our workouts – specifically AirPods.
My question is, if multiple people are using AirPods that work on the same frequency/signal, how come our music doesn’t all interfere with each other? How do each of our phones/AirPods differentiate from the others a few feet away from me?

In: Engineering

Answer 1

You turn on your AirPods.

AirPods: “hey, phone, are you there? It’s AirPods 123. Remember me?”

Phone: “yup! Let’s connect. Frequency 8.56 seems pretty empty today, let’s use that one.”

AirPods: “ok! Tuning to frequency 8.56”

Phone: “and our secret code today is XYZ456, ill put that in front of all the data packets I send you”

AirPods: “got it! I’ll ignore any data packets that don’t start with XYZ456”

Phone: “here comes the music!”