Configure Storage Options
You can select the location of envelope storage in the "Settings" tab of your ATS configuration. By default, the identity envelope (along with a generation timestamp and version information) is written to a first-party cookie. You can alternatively instruct ATS to write into local storage.
To get the "Settings" tab, select ATS → Web. Then click on a configuration and select "Settings".
To configure your envelope storage location:
Under Storage Options, confirm or adjust where the identity envelope should be stored by selecting Local Storage or Cookie.
If your site visitors are authenticating on a subdomain, click the Advanced settings on the right side of the screen.
Enter the root domain in the Enter Root Domain field. For example, if your visitors authenticate on 'login.example.com', set the root domain to your equivalent of 'example.com' to ensure that the envelope is stored under the main domain and is available across subdomains on the same site.
Note
You must use cookies for storage if using a root domain; localStorage is always bound to the subdomain.