Sleep Number’s Responsive Air technology can sense sleeper's movements and respond to them, automatically adjusting the bed’s level of firmness and support. There is also a sensor at the end of the bed that collects all the data and sends it to the Sleep Number app. It also includes SleepIQ technology, which uses sensors inside the mattress to track movement, heart rate, and more, so a sleeper can better understand how they are sleeping and make important adjustments if needed.