I am thankful you are in a safe town. Most in the US, not just rural, who go on the national sex offender registry site are alarmed at how many of these criminals are within close proximity to their house and schools.
PS. I have 3 children and have purchased the watch gps option from a company. It has very real design flaws but I am comforted in knowing my child cannot be taken without me immediately notified and informed with location.
As I said, make it a cool looking "apple-like" device and some of the house arrest images will go away, I think. Google the girls Dugard and Smart and the thousands of others that disappear or are abused each year and the business becomes compelling. I DO NOT wish to be an alarmist but bottom line is nobody thinks it will happen to them.