Instacart sign-on
By default, your storefront uses the same sign-on service that's used by Instacart Marketplace. Customers sign in to your storefront with the same email they use when logging in to Instacart Marketplace. They receive a one-time password (OTP) by email, which they must use to authenticate their sign in.
The following image shows an example of a sign in form and sign up form:
When a customer signs up, they receive an email to confirm their address.
The following image shows an example of the login flow:
