How to pass a json token to another part of a VB.NET WebForms site before login

Question

Passing OneID token attribute to VB.NET Web Forms Application

We are trying to add OneID authorization and login to an existing VB.NET Web forms application. The application currently allows users to log in with a user name and password, but our customer would like users to be able to log in with an ID card in a card reader.

We are able to use the card in the card reader to get approval from the authorizer and to extract a token containing user information, But we are not able to pass any information from that token to the existing part of the web application to use it to log in.

We can extract an email address from the token, and if we can pass that to the log-in function of the existing application, that will enable us to log in the customer, but we've found no way to make that work.

Most often in this application, we pass information in the session state, but we are not able to add anything to the session state before logging in, so we are not able to add that piece of information. 

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