The iPhone 12 Pro and Pro Max, iPhone 13 Pro and Pro Max, and iPhone 14 Pro and Pro Max models have a LiDAR scanner next to the rear camera that can be used to instantly measure a person’s height in Apple’s pre-installed Measure app. Apple introduced the Measure app a few years ago, an augmented reality (AR) app that lets you measure objects and people around you with the help of the iPhone camera.
To measure a person’s height, simply open the Measure app, point your iPhone at the person you want to measure and make sure they are visible on the screen from head to toe.
After a short moment, a line will appear above the person’s head with their height measurement. You can choose to display the measurement in feet and inches or in centimeters under “Measurements” → “Measurement Units” in the “Settings” application.
The application measures the height of a person from the ground to the top of their head, hair, or hat. You can even measure the height of a person sitting in a chair.
The circular shutter button in the lower right corner allows you to take a photo of a person’s height measurement and share it with them.
This feature is not available on iPhones without a LiDAR scanner. The reason it’s so easy to measure someone’s height on the iPhone 12 Pro through iPhone 14 Pro models is the hardware. 2020 saw Apple introduce the LiDAR sensor on the Pro version of the device, which is what makes this feature possible. The sensor measures the time it takes for light to travel from the phone to the object. As a result, the sensor will come in handy in AR applications, such as the Measure app.
