Guest: Rosa Saba, Toronto Star business reporter A vaccine certificate system is now the rule of law in Ontario. Customers will have to show proof of vaccination in many public spaces and businesses, like indoor dining at restaurants, gyms and sporting events. After months of debates and doubts from the Ontario government, the passports are being touted as a way for businesses to avoid another set of lockdowns in the fourth wave. But there are many questions over the reality of how the vaccine passports work. Why isn't the passport on an smartphone app like Quebec's system? How easy is it for bad actors to forge their certificates? Is it on businesses to enforce the passports at the door? Today on "This Matters," we have your need-to-know guide for how the vaccine passports are working right now.