The certificate
Not an attendance sheet: proof. Every KARD course ends with an exam. Pass it and you get a certificate in your name, with a unique number and a public page.
Scan the certificate's QR code, or type its number on the verification page. You see the name, the course, the date, and whether the certificate is valid.
Verify a certificate →Take the two-minute orientation test, or pick your course directly. You pay when your box is delivered, never online.
Courses people finish, that prove themselves, and that you only pay for on delivery.