It aids in inquiry by assessing the writer's psychological condition, identifying the writer, and assisting in criminal profiling. The many characteristics of handwriting (such as spacing, margins, pen pressure, size of the letters, etc.) can be used to identify its owner. Graphologists use these characteristics to identify the personality type of someone who writes with little or no variation in style across different documents. They also use it to diagnose mental illness and other psychological conditions. Last but not the least, it can be useful in crime scene photography to match known criminals with their handwriting samples. Handwriting recognition is a process where handwritten characters are transcribed into text that can be processed by computers. It has been used for centuries by scholars to translate ancient writings. More recently, it has been applied to electronic devices such as computer keyboards, touch screens, and mobile phones. Although computers can now recognize written words at a rate of several hundred words per minute, this ability remains far below the nearly instantaneous typing of trained writers. In 1872, Dr. William E. Goudy invented the first typewriter with keys arranged in alphabetical order, making it possible to type words instead of only symbols. This invention paved the way for modern handwriting recognition systems. Early handwriting recognition systems relied on teachers or librarians to write down words that students were asked to copy down.