OP is spitting nothing but truth.
Jurassic World REALLY pissed me off with that "heat sensor" tracking shyt that the dinosaur evaded. Why would you install high-tech systems to track the thing when you could just insert a fukking beacon of some sort under its skin? I mean, just put a damn GPS locator in it and you could track it to the nearest meter at all times. If you're scared of ineffectiveness than use multiple devices, say one GPS and another radio or some shyt. There's all sorts of stuff you could do without relying on fukking sensors.
And then if your sensors aren't showing anything, you just stroll right into its fukking den to see what's up?