Slide 19 of 26
Notes:
For single-switch access, there is typically a need to be able to scan and make a selection within a specific time period. So the client is not only having to physically select a switch, but also work within a particular window.
For clients able to access two separate switches, it is possible to overcome some of these timing issues by using a mode of step scanning whereby one switch causes a marker on a device to move between locations, and the second switch makes an activation. Having a "Move switch" and a "Select switch" operating independently takes the time element out of the equation. It increases the number of activations needed to access an item, but eliminates the stress or inaccuracies caused by time-based selection.
The SpringBoard offers both single-switch and 2-switch step scan options.
