A stylus pen is a small, pen-like tool used to interact with touchscreens on devices like tablets and smartphones. It allows for more precise control than using fingers, making it ideal for tasks such as drawing, writing, or navigating apps. Stylus pens often come with different tips, including rubber or fine-point options, to suit various needs. Many stylus pens are compatible with specific devices, such as the Apple Pencil for iPads or the Samsung S Pen for Galaxy Note phones. Some stylus pens also feature pressure sensitivity, enabling users to create varying line thicknesses, which is especially useful for artists and designers.