# Eye Tracking Input

**URL:** <https://psychtoolbox.discourse.group/t/eye-tracking-input/1493>\
**Category:** Uncategorized\
**Created:** [November 12, 2002, 12:12am UTC](https://psychtoolbox.discourse.group/t/eye-tracking-input/1493 "2002-11-12T00:12:15Z")\
**Posts on this page:** 1\
**Page:** 1

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**Author:** ![seth\_blau](https://avatars.discourse-cdn.com/v4/letter/s/db5fbb/32.png) [@seth\_blau](https://psychtoolbox.discourse.group/u/seth_blau)\
**Post date:** [November 12, 2002, 12:12am UTC](https://psychtoolbox.discourse.group/t/eye-tracking-input/1493/1 "2002-11-12T00:12:15Z")

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Greetings..  
  
I'm new to Psychtoolbox, so please bear with me..  
  
We are planning on using an ISCAN eye tracking device in conjunction   
with a PC (Win XP) running PsychToolbox. Can someone please give me   
some info on how to read data from PC cards (e.g. digial i/o cards)  
in Matlab/PT? Are there Matlab routines for this? What about in   
the Data Acquisition Toolbox?  
  
Also, I notice that some Matlab commands (relating to I/O, for   
example) become non-functional once SCREEN is invoked. (e.g. input()   
is functionally replaced by PT's getchar() and the like). Will this   
be a factor when trying to access data from an eye tracker (or any   
data from an i/o card) while running PT? Do these Matlab routines   
cease to function?  
  
Any help is greatly appreciated.  
  
- Seth Blau  
 Brown University