Digital credential

Digital does not mean a PDF

The word does a lot of unearned work. Scanning a paper certificate produces a digital file, and organisations reasonably describe the result as a digital certificate. But nothing has changed about what it proves. It is the same claim, equally unverifiable, now easier to edit.

A digital credential in the sense used across this site is not a file that happens to be electronic. It is a record that exists somewhere permanent, that can be pointed at, and that can be checked by someone who has no relationship with the issuer.

The three things that separate them

Given any credential, three questions sort a checkable credential from a picture of one.

• Does it have an address? A credential with a URL can be linked from a CV, shared on LinkedIn, and opened by a stranger. A credential that only exists as an attachment has to be forwarded, and a forwarded file is evidence of nothing.
• Does it have an identity? A credential ID distinguishes this award from every other award the issuer has made, which is what makes a specific claim checkable rather than a general one.
• Does it carry proof? Without a digital signature, a credential page is just a web page, trustworthy in proportion to how much you trust whoever runs the server. With one, its contents can be checked mathematically. That is a verifiable credential.

What sits under the umbrella

Digital credential is the general term. The common specific ones differ in what they represent rather than in how they work.

• Digital certificates. The document-shaped form, usually marking completion of a course or programme. See digital certificate, which also has an entirely unrelated second meaning worth knowing about.
• Digital badges. Smaller, image-led, and better suited to a single skill than a whole qualification. How badges work here covers when one is the honest unit and a certificate is not.
• Micro-credentials. Short, specific, and often stacked, where several small awards accumulate towards a larger one.
• Memberships and licences. The same machinery applied to standing rather than achievement, usually with an expiry date attached.

Why organisations move to them

Rarely for the technology. The usual trigger is that answering verification requests has become somebody's job. A training provider issuing four cohorts a year accumulates thousands of alumni, and a slow trickle of employers asking whether a name on a certificate is real. Every one of those emails costs twenty minutes and produces nothing.

A credential that verifies itself removes that work entirely, which is the practical case for it. Credential verification covers what the employer sees at the other end.

The honest limits

A digital credential is stronger evidence than a PDF, but it is still only evidence about the record. It cannot make a worthless qualification valuable, it cannot stop an issuer awarding credentials carelessly, and it cannot tell you whether the person sending it is the person it names. What it settles is whether the claim in front of you is the claim the issuer actually made, which is the question that used to require a phone call.