Barrier Skip
Daxter
In Daxter, barrier skip is performed by clipping through the barrier by mounting the scooter while it is located on the opposite side of the barrier.
Tutorial
If the player drives the scooter towards the barrier, then quickly hops off and turns the camera away, the scooter will go right through the barrier. This is because the barrier collision is not rendered when the barrier is not in the camera frame. If the scooter stops close enough to the barrier on the other side, Daxter will be able to mount the scooter and pass right through the barrier.
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Technical
Hypothesis
What appears to be happening with Daxter's barrier skip is view frustum culling where the barrier is removed from the rendering process due to it being outside of the view frustrum (the camera's view). Since the scooter is not temporarily removed when out of the camera's view, its momentum continues and is no longer obstructed by the barrier. Turning the camera back will now "reactivate" the barrier with the scooter on the other side.
Discovery