Here's a party trick for iPhones with a LiDAR Scanner. You can use the rear camera to get someone's height. This works with the iPhone 12, 13, and 14 Pro and Pro Max models. To measure your height or someone else's you need to use the Measure app. Then you can point your iPhone at the person you want to measure. They should be visible from head to toe. After a few moments, you should see a line with the person's height at the top of their head. You can choose to have the measurement displayed in feet and inches or centimetres. There will be a circular shutter button in the bottom-right corner to take a photo of the person with their height measurement.