I don't know what the solution to child molestation is, but I know that the GPS devices isn't it, and set a very dangerous precedent. I can't be the only one thinking of Battle Royale right now - for those of you unfamiliar, it's a Japanese movie about a 9th grade class forced to kill one another on an island. They have explosive GPS collars on, so if they are in certain areas of the island, nobody dies, they attempt to remove the collar, etc. they die.
And yes, I believe child molesters are scum. If they truly are molesters, harsh sentances are justified. But therein lies the problem - a 17 year old, 2 hours short of his 18th birthday, cannot give consent legally. So his 18 year old girlfriend is a child molester if they have sex. Or a father in a nasty divorce case is accused of molesting his 3 year old, which he did not. In CA, he would have his DNA in a database (new law mandates a DNA database for ALL felony arrests. Not convictions, just arrests. Thank you Ah-nold, you idiot, for endorsing this bill, and thank you my fellow Californians for electing this muscle-bound actor. I was still 17 during the recall.) In FL, they'd be fitting him for the GPS.