Apple’s iOS 15 Has a Fall-Prevention Feature Everyone Should Use

Wearable devices are good at detecting if you’ve fallen down, but now it’s possible to figure out if your walking is unsteady, well before you take a tumble.

Apple ’s latest iPhone operating system, iOS 15, takes the walking metrics previously rolled out in the Health app—walking asymmetry, double support time, step length and walking speed—and assesses them to rate a person’s overall walking steadiness. After a few days of collecting data as you walk around, preferably carrying or wearing your iPhone at hip level, you’ll receive a notification that your walking steadiness is OK, low or very low.