I called the SSA for technical support accessing their site. The Help desk said that they were given a new procedure to verify a persons identity. I followed their instructions and created an account on the id.me site. After creating the account I was redirected to their shopping site.
The help desk at SSA did not expect me to be redirected to their shopping site, as they intended to use it to verify customers identities. The site "claims" to have an identity service, but it was hard to find, and certainly work as claimed.
I got the impression that it is not as legitimate as it would like us to believe, more likely another shifty site collecting personal information for fun and profit.