The Wrong Key . . . = Big Delay

Here's the example:

• User wants to click the 3rd key on the 2nd row of an on-screen keyboard.
• The scan speed is set for 2 seconds to give enough time for the user to process the keyboard.
• Now the software advances to the 2nd row.
• The user clicks to get into the 2nd row.
• The user clicks the 2nd key not the 3rd key; the user clicked too soon.
• Now a letter has been typed and we have to somehow backspace that letter and start over

The time penalty this takes is hard to estimate but image if you had to scan to the backspace key then hit backspace and then scan to the "right" key. Too much time!

REACH has an answer to solve this problem. REACH's scan undo!