The main criteria is to be physically in Canada, because the fiat funding is through physical cash deposit at any Canada Post post office (or you can pay with debit, but what is the point if you use debit?). You just bring your nym account QR code to the post office, tell the clerk you want to pay to this QR code, and hand them cash. The clerk usually don't ask you any questions, nor should they ask you for any ID, and you fund your account with cash, non-kyc. I did have a clerk ask me for ID once (out of probably more than 15 times), and I told her I forgot my ID at home and never went back to that post office location again. To deposit cash, you can be a Canadian, or a permanent resident, or an international student, or a visiting tourist, or an alien disguised as a human, you get the idea.

The tradeoff is deposit limit, as non-kyc cash deposits are limited to under $1k CAD per deposit and under $7k weekly. If you're a big time stacker, this might not work for you.

The following is copy and pasted from bullbitcoin's site