Simple double action locking mechanism:
To open: Squeeze both buttons fully, and simultaneously turn counter clockwise quarter of a turn (approximately 90 degrees).

Smart Guard is based on the premise that most children up to the age of 5yrs will have great difficulty with the 2 action locking system based on the span/size of one’s hand and being dexterous enough, at the same time,
to turn counter clockwise approx. 90 degrees.

Even if a child is watching the parent open Smart Guard they will have physically a much greater degree of difficulty in opening the products themselves.
Thus Smart Guard is a very effective deterrent, as opposed to other products on the market like cabinet locks or medicine bottles that have child deterrent tops. Just push down on the lid and the box is locked shut.