Glossary
Acceptance Time
Time a switch must be held before selection is confirmed.
Auto-Scan
System automatically advances highlight at a set rate.
Continuous Scanning
Focus moves smoothly rather than stepping item-by-item.
Critical Overscan
Fast forward scan with slow-back precision selection.
Directed Scanning
User steers highlight using directional switches.
Dwell Time
Auto-select when highlight stays on item for a threshold duration.
Elimination Scanning
Repeatedly split the set until the target remains.
Group Scan
Select a group first, then scan within that group.
Input Bandwidth
Amount of information a user can transmit per unit time.
Row-Column Scanning
Scan rows, then items in the selected row.
Scan Rate
Time each item stays highlighted.
Selection Set
All items available for selection at a given time.
Step Scan
User controls movement and selection.