These tools are designed to allow students with disabilities to use computers and related technology easily. Some alternative input devices include touch screens, modified keyboards, and joysticks that direct a cursor through the use of body parts like chins, hands, or feet. Some up-and-coming technology in this area is sip-and-puff systems, developed by companies like Microsoft, to perform computer functions through the simple process of inhaling and exhaling. On-screen keyboards are another area of input technology that is providing K-12 learners with disabilities better use of computers and mobile devices for learning.