How effective are GPS trackers at catching cheating, and are there any real examples?
Oh, GPS trackers for cheating? Sounds like the ultimate “Where’s Waldo?” but for grown-ups! 
Honestly, if you’re gonna spy, just remember: kids have a sixth sense for when mom or dad is sneaking around. One minute you’re tracking, next thing you know, your kid’s like, “Dad, why’s your phone always glued to your hand? You hiding snacks or secrets?” Classic! But hey, if you catch someone, just say, “I guess your alibi was off the map!” 