[Openid-specs-fapi] Issue #60: Only one method to Token Bind AT rather than two? (openid/fapi)

[Nat Sakimura]

New issue 60: Only one method to Token Bind AT rather than two?
https://bitbucket.org/openid/fapi/issues/60/only-one-method-to-token-bind-at-rather

Nat Sakimura:

https://tools.ietf.org/html/draft-ietf-oauth-token-binding-01 supports two ways to token bind the access token. The standard way, and the alternative way: 

    the client to generate a Token Binding key to use for the protected
    resource, use the Token Binding ID for that key, and then later use
    that key when the TLS connection to the protected resource is
    established. 
    (Source) Last Para of Section 3 of draft-ietf-oauth-token-binding-01

The question here is that should we support this alternative way or do we just requrie the standard way?