A good rule of thumb (other than the old 'rebroadcast' caveat) is that in Ontario there are no legal restrictions for owning a scanner. However, there are legal restrictions for what you can do with said scanner and almost none of them have anything to do with the scanner itself.
But the thing is criminals using scanners for crime is not going to care if thel laws say you can have it or not.Now thats say you took away MDT's,cell phones and encryption and I would say scanners would be illegal.If the cops had to use the radios 100% of the time than scanners would be illegal or the 800 Mhz band block out.But the thing is most cops are using the MDT and cell phone more and more and the D units using encryption .
There is no way you can pick up encryption because of the hashing algorithm where a letter is substituted with other letter where word (next) becomes (PGUV) the kay would know its Shifted by 2X.
Or you could use number for a word like the word (next) using a 2 bit number you got 4 different combinations but you not going to use 2 bit number .
Just don't drive with alot of scaners or go to calls or you in for trouble with the cops !! Scanners are too much frown on by the cops and more so the DI and staff sergeants.Who has little empathy with news media,scanner buffs or emergency service buffs and fighting over other police departments on protocols when they are involved or calls at the border.