New York City’s coronavirus vaccine mandate, known as the Key to NYC, went into effect on Tuesday. 

It means New Yorkers will need to show proof of vaccination at indoor restaurants, gyms and entertainment venues. 

You could also prove you're vaccinated by bringing your actual vaccine card or a copy with the New York State Excelsior App. 

This is all part of Mayor Bill de Blasio’s first-in-the-nation vaccine mandate. 

The city is giving businesses until Sept. 13 to fully start enforcing the rule. Businesses that do not comply could face fines from $1,000 to $5,000. 

However, some restaurants are not planning to comply with the mandate. The Hudson Smoke Shop in Mott Haven says that although workers will be checking customers for proof of vaccination, they are not happy about it. 

To use the NYC COVID Safe app, you’ll need to upload a picture of your photo ID, your vaccine card and a copy of a negative coronavirus test taken in the last seven days.