Hombreys

Nah, must be electromagnetic waves that can pass through your bod. So a button that sends out like ten pings per second, other buttons receive this signal and depending on the signal strength it can determine how far away the other button is. Also, by comparing historic data it can determine if the other button is coming closer and at what speed and acceleration. Add a directional antenna to this button that sends stronger signal infront of you, meaning it draws out your "event cone" with a stronger signal. There are drawbacks of course, but I wont mention them until I've sold the product lol.

When fast gas passes slow gas (in lungs) it tends to try to pull it along, creating a small under pressure which gives this sensation of not being able to breathe. I experienced this on my first aff jump, got the tip of closing my huge mouth and to breathe normally through my nose. Not had a problem since.