MB-R320
Access to an object is based on the originating subject's (e.g. consumer's) permissions, not on the permissions of any intermediary or service acting on their behalf. For example, if a consumer calls a web service using a self-contained token for authentication, and the service then requests data from a different service, the second service will use the consumer's token, rather than a machine-to-machine token from the first service, to make permission decisions.
