You are useless in Canada without Interac (debit, but not really from a US POV [1]). This is the number one choice of payment in Canada. Hell, I don't even <i>carry</i> cash anymore because Interac is near universal.<p>It's going to be difficult to gain traction for Square if they are offering businesses a solution that only provides half of what the competition does, even if it is cheaper.<p>Square has - unless they know something they aren't saying - massively misunderstood the reality of the marketplace in Canada. It is not the US with funny tax laws. In the realm of consumer banking/payment, we are light years ahead of the US in certain key ways.<p>1. In Canada, our bank/atm cards are our debit cards. The entire system is linked with a joint network called Interac. When you open a bank account you get a chip/PIN enabled card that allows you to make direct withdraws from ATMs, as well as instantly buy something from a terminal at a store. Credit Card providers are shut out of this system, and its 100% penetration with Canadian banks has made it the primary consumer choice for payments. Yes, security is a bit of an issue, hence the high rate of chip adoption in Canada. See: <a href="http://en.wikipedia.org/wiki/Interac" rel="nofollow">http://en.wikipedia.org/wiki/Interac</a>