<ul data-eligibleForWebStory="false">Many Americans will be celebrating Fourth of July with friends and family.A fun iPhone party trick involves measuring a person's height in the Measure app using LiDAR Scanner.Steps include opening the Measure app, ensuring the person is visible on the screen, and tapping the shutter button to capture the measurement.The feature is available on select iPhone models with a LiDAR Scanner and allows measurement in imperial or metric units.