https://payments.ca/sites/default/files/PaymentsCanada_Canad... page 7
EDIT: In the past few years, many Canadian banks have started issuing dual-network debit cards that bear both Visa and Interac logos (sometimes MasterCard and Interac). These cards use the Interac network in Canada, but can also be used online and abroad using the second network. I just wanted to mention it for people who may be curious about the apparent shift in debit card networks.