I consider a hidden push button starter switch a good anti theft device.
It means they can not use a master key, pull out the switch, etc to start the car...
Just put it somewhere they will not look for it...
It can also be used to keep people in your family who don't really know how to drive your baby correctly from using it... LOL
Put the hidden switch so the left hand can reach it... down low by the seat.. then it will not be obvious you are not using the actual key to engage the starter...