After the article was written, the Supreme Court of Indiana did end up ruling in favor of the car owner. From the ruling [1]:

> To find a fair probability of unauthorized control here, we would need to conclude that Hoosiers don’t have the authority to remove unknown, unmarked objects from their personal vehicles.

In this case, however, there was no obvious indication that the device was put there by the police.

[1]: https://law.justia.com/cases/indiana/supreme-court/2020/19s-...

A man in my country, found police trackers on his vehicle, listed them for sale on the local version of eBay.

http://www.stuff.co.nz/national/48059/Man-finds-police-track...