The really funny thing that nobody has seemed to mention is the a montreal "parking meter" is a post with a number on it now. All the "metering" happens at the electronic pay stations. the actual post with the number just marks the spot where you parked. Apple could coveivably ask to make custom posts, or put sidewalk plaques or something like that with the space number.
How the system works is you park your car, take note of the number where you parked, find a pay station punch in the number of the parking meter, then pay for the time you want. You don't even put your ticket on your dash.
The system has a pretty big flaw too. You can reset the time on a "parking space" by typing it in at any pay center and then making a minimum payment of a quarter. So if someone just paid the 6$ max fee for 2 hours of parking you can reduce that to about 15 minutes.