Switch Scanning

Switch Scanning

Saltillo Corporation has implemented scanning features for the ChatPC-4 software.  Although the ChatPC-4 series has a variety of scanning options using the touchscreen as the switch will most likely be used most often.  Scanning is only required if the device user is not able to activate a specific button. 

Using the Touchscreen to Scan

There are times when a device user isn’t capable of activating specific areas on the screen, i.e. maybe doesn’t have the pointing skills to hit one button.  Using the touchscreen to scan allows the device user to tap anywhere on the front of the screen to initiate a scanning procedure.  Scanning is typically only used if the device user can’t activate a specific button on a page and needs one specific target.  In this scenario the front screen of the device can act as a single switch. 

To set up the Touchscreen to Scan:

• choose Switch Settings from the Edit Menu
• set the Selection Method to One Switch
• choose the mode of scan that is most appropriate, Row/Column will scan across the top of the rows and then scan down through the column once that column is selected with a tap of the screen, Linear starts scanning left to right across each row, and Circular starts in the upper left toward the right and then starts the next row in the right and goes to the left.
• check Scanning On
• check any other options that may be appropriate
• latched scanning – requires a screen tap to start the scan and then it continues to scan through each item until the next screen tap makes a selection.  With Latched Scanning Off a screen tap is required to move the scan through each button, one at a time.
• Skip empty cells will skip over a cell without a button
• Activate on Release – makes the actual activation when the finger or stylus is released from the screen instead of activating immediately upon the push
• With Reverse Direction selected the direction of the scan will be from right to left instead of left to right

• choose Switch Setup and check Use as a switch in the Touch screen option.

Use the other tabs to modify the scanning options to meet the device user’s specific needs.

Scan Settings (Table with Description)