ambient verifiability
Definition
Verifiable by anyone, anywhere, at anytime. Although this seems a general term, it was first used in the context of KERI by Sam Smith.
Ambient Duplicity Detection is an example of ambient verifiability that describes the possibility of detecting duplicity by anyone, anywhere, anytime.
Criteria
As soon as you limit any of the parameters of location, time or who can verify, it's not 'ambient verifiability' anymore. For a signature to be ambiently verifiable, it needs to have no restrictions on these parameters.