SharePoint 2013 and SharePoint 2010 display identity claims with the following encoding format:
<IdentityClaim>:0<ClaimType><ClaimValueType><AuthMode>|<OriginalIssuer (optional)>|<ClaimValue>
Here are some places in SharePoint where you will see claims encoding (please add to this list):
Here are some examples (please add your own based on your experience):
Type of claim
Encoded claim
Claim encoding breakdown
Windows User
i:0#.w|contoso\chris
Windows Authenticated Users group
c:0!.s|windows
Active Directory Users group with SID
c:0+.w|s-1-2-34-1234567890-1234567890-1234567890-1234
Custom ADFS claim provider
i:0ǵ.t|custom-adfs|First.Last
SAML authentication (Trusted User)
i:05.t|adfs|chris@contoso.com
Forms-based authentication
i:0#.f|mymembershipprovider|chris