Thinking that they could if they had a warrant, speculation,imo.rbbm.
https://www.publicsafety.gc.ca/lbrr/archives/cnmcs-plcng/cn31164-eng.pdf
''When law enforcement uses words such as electronic interception, intercept capable, electronic surveillance and combines such words with the most widely used forms of communications by society – Internet, cellulars, social media.....it understandably raises concerns of many Canadians. So much so that when Canada’s Privacy Commissioner surveys Canadians and states “More than eight in 10 respondents (82 percent) opposed giving police and intelligence agencies the power to access e-mail records and other Internet usage data without a warrant from the courts” most of us in law enforcement would back such a statement. But let’s be fair, this is not what governments and Canada’s law enforcement leaders are proposing. These same technologies are providing a safe haven for serious criminal activity in Canada – organized crime, sexual predators, gangs, identity theft and terrorism are among the many examples.''
https://www.publicsafety.gc.ca/lbrr/archives/cnmcs-plcng/cn31164-eng.pdf
''-IP address or cellular tracking(monitoring)-Could only be done through a warrant-Could only be done through a warrant
-Monitoring Internet Surfing-Could only be done through a warrant.
-Could only be done through a warrant-Mechanism to obtain content of email, cellular call, etc.
Obtainable only by way of warrant *Ad hoc basis – TSP’s are not required to preserve data. By time law enforcement obtains warrant, content may not be available. Severely handicaps law enforcement and may endangers lives Obtainable only by way of warrant *- implements production and preservation orders.** - allows law enforcement to request TSP to preserve data while a warrant is being requested (helps ensure data is not lost)''