Canada has no national transit wallet. Local systems use their own fare cards, zones and transfer rules, and the same contactless bank card can play three different roles in one trip across the country. The useful habit is to learn the tap grammar before the first gate.
The Canadian three-city tap test
Toronto remembers the payment identity
The TTC applies a two-hour transfer to the card or device used for the first tap. Tap again when entering a station or boarding another vehicle, but keep using that exact method. A physical card and the same card in Apple Pay or Google Pay do not necessarily look identical to the fare system.
Vancouver charges by how far the gate travels
SkyTrain and SeaBus use zones, so the exit tap completes the fare. A bus is always one zone and needs only the entry tap. Contactless is convenient for an occasional adult rider; a Compass Card can make more sense for passes, concessions or frequent travel. Trips from YVR can also carry the airport AddFare.
Montreal sells a product before it sells a ride
Greater Montreal's fares are organized by zones and loaded onto OPUS or issued on an occasional magnetic card. The Chrono app can reload a physical OPUS card from a compatible phone. A debit or credit card can pay at fare machines and booths, but visitors should not treat every validator as an open bank-card gate.
Card clash can buy the wrong journey
Readers can see several contactless cards at once. Present one card or device on its own and keep it available as proof of payment. Each traveller needs a separate fare medium or payment card; one tap does not quietly buy rides for a group.
The smallest rule saves the largest queue
Choose the city's method before reaching the barrier. Toronto: same token. Vancouver: remember the exit. Montreal: own the fare product first. Those three phrases are more useful than trying to force one city's travel advice onto another.