Illinois has launched Vax Verify, an online COVID jab verification portal for residents. Anyone over the age of 18 can use the portal to check and download their shot records for events and businesses that require it
Identity authentication on the Vax Verify portal is done using a one-time verification process through the financial credit score company Experian — a decision that suggests the vaccine passport will be connected with financial information in the future.
https://articles.mercola.com/sites/articles/archive/2021/08/28/vaccine-passports.aspx