At the beginning of the study we have subjects give some information about themselves, including their initials (which we use a fill-in-the blank item for). A little later we use powerpoint to manipulate our main independent variable (status). My problem is that I need to allow subjects to use the keyboard to give their initials (which is the main way they are identified), but need to disable the keyboard during the powerpoint show because of the timings. The "browse from kiosk" option won't work for us because we need the pps to run only once. Any suggestions?