What is it?
Switch scanning is an alternative access method that allows a person to navigate and select items using one or more switches instead of directly touching or pointing to them. Items on a screen are highlighted in sequence or in groups, and the user activates a switch when the desired item is highlighted. Scanning can be used for communication, writing, computer navigation, educational activities, and other digital tasks.
How to use it?
Connect or configure an accessible switch and enable scanning within the device, software, or operating system. Choose a scanning pattern, speed, and selection method that match the learner's abilities and experience. Position switches where they can be activated comfortably and reliably, and introduce scanning through meaningful activities with a manageable number of choices. Adjust timing and patterns as skills develop, and consider factors such as fatigue, accuracy, efficiency, and the cognitive demands of following the scan.
Why use it?
Switch scanning can provide access to technology for learners who cannot reliably select items through direct touch, a mouse, or another pointing method. Because a consistent movement can be used to navigate many different options, scanning can provide access to large amounts of vocabulary, writing, applications, and digital content. With appropriate setup and practice, it can support greater independence across communication, learning, recreation, and environmental control.
