I want to use Esri's sign in page within my application so that the user (the general public) can create a public account before using my app. Then redirect them to my app when they have signed in. I am not using any private or confidential information. All information published is for the public therefore I do not see the need in using OAuth. I just want then to sign in and then be able to access my app as a signed in user. How can I do this? Thank you.