The danish one has even less safety features, because it is your choice whether to use a printed document (which you can download as a PDF that you can then edi

The danish one has even less safety features, because it is your choice whether to use a printed document (which you can download as a PDF that you can then edit), through the official app or, by the SMS that was sent to you at the test place where you took your test. You can trivially fake either, but you can also just claim you are excempt. Almost nobody is, of course, but they are not allowed to ask for documentation and must let the doubt come to your benefit. In practice, this works mostly. Probably because people don't want to fake their tests, which is a serious crime.