You could use something that appears very early in the module that the user clicks. Add a "When user double clicks" trigger that asks for a password. There is low likelihood that a learner will ever see it, and if they do, there is no damage. Whether the password is correct or not, take the same action as a single click. If the password is correct, set a variable.
Build Next and Previous buttons on the master that are initially hidden, and become visible when the timeline on each slide starts if the variable is the correct value.
I haven't tested this, but I think the principle is sound.
Hi Walt
Thanks so much for the suggestion, I have done something similar to this. I have made it that when the person clicks the number 6 (this will change to keyboard button one will never use in our learning) on the keyboard a layer pops up where one can log in and click next slide. The only element that it still does not allow is scrolling in the seekbar so I need to find out if there is a variable one can change once the user clicks the button it says slide is viewed so the seekbar bar is unlocked for that slide. this is not a major issue but something nice to have.
