Can I use my phone as a ruler is a common question when you need a quick measurement and there is no tape measure, ruler, or measuring tool nearby. The short answer is yes, your phone can work as a ruler in many everyday situations, especially for small objects, rough...
Can a smart phone measure the things people once needed separate tools for, such as distance, height, room size, sound levels, light, speed, and even basic health signals? The short answer is yes, but with limits that matter. Modern phones contain cameras, motion...
