Your baby loves to press all the keys on your Mac's keyboard, but he/she doesn't realize the problems that can result:
Deleted or moved files
Deleted or moved emails
Windows closed
Baby Shield prevents your baby switching to any other applications including the Finder. When a key is pressed, your baby is entertained with an image relating to the key pressed and one of a number of tunes if one is not already playing.
So using Baby Shield:
Your Mac is protected
Your baby is entertained
Your baby is educated