[Openid-specs-ab] amr vs acr

[Torsten Lodderstedt]

Hi,

could someone please describe me the difference between the id token members acr and acm? From my understanding, they are just the same. I'm also interested to learn why the authorization request allows to specify multiple acrs but does not support to specify any authentication method (via acm). Additionally, why is there no way to indicate more than one acr in the id token?

Thanks in advance,
Torsten.