This is absurd. The use of a tracking device should absolutely require a warrant. Such is the law in Canada. now, given that tracking someone's movements and location is less an invasion of privacy, than, say, intercepting their private communications or searching their home, a tracking warrant should have less onerous grounds required than for a search warrant.
That's the way it is up here. "reasonable grounds to
suspect that an offence has been committed" for a tracking warrant vs. "reasonable grounds to
believe that an offence has been committed" for other warrants like a search warrant.
I can't wait until Boogie come's in here to play "devil's advocate".
In conclusion: Suck it, TB.

edit: Then again, the anonymous former agent said that it would be common practise to get a warrant for a tracking device regardless of that recent court decision.