What scan modes does Proloquo2Go offer?

Proloquo2Go offers five different scan modes to meet a variety of users' needs. Below is a description of each scan mode, the basic adjustments that can be made to them, and who they are appropriate for: 

Automatic Scanning

  • What is it? 
    • The user has one switch. Each item is highlighted for a set amount of time. If the switch is activated while the item is highlighted, the item is selected. If the switch is not activated, the highlight moves on to the next item in the scan pattern.  
  • Basic adjustments:
    • Scan rate: number of seconds each item is highlighted
    • Switch: External or device screen 
  • This is for users who: 
    • Have at least one reliable way to hit a switch or the screen. It may be difficult for the user to hit the switch. This mode requires the least switch hits of any mode.
    • Can handle the timing and attention demands of watching and waiting until the item they want is highlighted
    • Once the item they want is highlighted, can relatively easily activate their switch and recover in order to hit it again soon

Step Scanning

  • What is it? 
    • The user has two switches. Activating the Stepper switch moves the highlight to the next item in the scan pattern. Activating the Picker switch selects the item that is currently highlighted. 
  • Basic adjustments:
    • Switches: External or device screen. You can mix external switches and device screen in any combination that works for the user. 
  • This is for users who:
    • Have at least two reliable ways to hit a switch or the screen. One of these ways may be easier, less effortful, or more reliable than the other. This easier one should be the stepper, as the user will need to use it more often.
    • May have difficulty with the timing and attention demands of watching and waiting until the item they want is highlighted, due to motor issues, distractibility, or being new to the idea of scanning

Inverse Scanning

  • What is it?
    • The user touches the screen as each item is highlighted for a set amount of time. When the user stops touching the screen, whatever is currently highlighted is selected. 
  • Basic adjustments:
    • Scan rate: number of seconds each item is highlighted 
  • This is for users who: 
    • Can easily keep touching the screen and lift up from the screen at a precise time when the item they want is highlighted
    • Can handle the timing and attention demands of watching and waiting until the item they want is highlighted
    • Have difficulty with staying off of a switch or the screen and then hitting it at a precise time (Automatic Scanning) 

Automatic Selecting

  • What is it? 
    • The user has one switch. Each item is highlighted for a set amount of time. If the switch is NOT activated while the item is highlighted, the item is selected. If the switch IS activated, the highlight moves on to the next item in the scan pattern. 
  • Basic adjustments:
    • Scan rate: number of seconds each item is highlighted
    • Switch: External or device screen 
  • This is for users who:
    • Have at least one reliable way to hit a switch or the screen. It should be relatively easy for them to hit their switch or the screen, as they will be doing it multiple times for each item they choose.
    • Can handle the timing and attention demands of hitting the switch frequently within the scan rate time.
    • Can relatively easily activate their switch and recover in order to hit it again soon
    • Want to move through the items they DON'T want in their scan pattern faster, which they can do by quickly hitting their switch to move on to the next item

Automatic Step Scanning

  • What is it? 
    • The user has all or part of the screen as a Stepper. While the Stepper part of the screen is touched, the highlight moves through the scan pattern at the scan rate. When the user stops touching the Stepper, the highlight stops moving, but is not selected until the user hits the Picker. The Picker can be the other part of the screen or an external switch. 
  • Basic adjustments:
    • Scan rate: number of seconds each item is highlighted
    • Switch: which part of the screen should be used for the Stepper; use the other part of the screen for the Picker, or an external switch 
  • This is for users who:
    • Can keep touching the screen more easily than they can repeatedly hit the screen or a switch as a Stepper for Step Scanning.
    • Can handle some of the timing and attention demands of watching to see if the item they want is highlighted, but may need practice developing this skill
    • May have difficulty with the timing and attention demands of watching and waiting until the item they want is highlighted, due to motor issues, distractibility, or being new to the idea of scanning

Was this answer helpful for you?