Until his credentials have been presented and found in proper order, an envoy receives no official recognition.
[1] Diplomatic credentials are granted and withdrawn at the pleasure of the issuing authority, based on widely varying criteria.
In medicine, the process of credentialing is a detailed review of all permissions granted a medical doctor, physician assistant or nurse practitioner at every institution at which he or she has worked in the past, to determine a risk profile for them at a new institution.
The classic combination of a user's account number or name and a secret password is a widely used example of IT credentials.
An increasing number of information systems use other forms of documentation of credentials, such as biometrics (fingerprints, voice recognition, retinal scans), X.509, public key certificates, and so on.
Operators of vehicles such as automobiles, boats, and aircraft must have credentials in the form of government-issued licenses in many jurisdictions.
Often they are granted to individuals only after a lengthy investigation and only after their need to have access to protected information has been adequately justified to the issuing authority.
Some credentials of this type are considered so sensitive that their holders are not even permitted to acknowledge that they have them (except to authorized parties).
Breaches of security involving security clearances are often punished by specific statutory law, particularly if they occur in the context of deliberate espionage, whereas most other counterfeiting and misuse of credentials is punished by law only when used with deliberate intent to defraud in specific contexts.
Any press coverage published under governments that restrict journalism in this way is often treated with skepticism by others, and may not be considered any more truthful or informative than propaganda.
The academic and professional world makes very extensive use of credentials, such as diplomas, degrees, certificates, and certifications, in order to attest to the completion of specific training or education programs by students, to attest to their successful completion of tests and exams, and to provide independent validation of an individual's possession of the knowledge, skills, and ability necessary to practice a particular occupation competently, (for example: Arun Paul MSW, MPHIL).
[2] Acquisition of these credentials often leads to increased economic mobility and work opportunity, especially for low-income people.
A general term for academic credentials in the form of a resume is Curriculum vitae, often abbreviated as CV.