I am not sure how to ensure that, unfortunately. The easiest way would be to have an assessment by the users of those micro-credentials, to check whether the micro-credential has been useful for their employability or to grow in their learning path. But those systems can be easily corrupted (look what happens in Amazon, with sellers offering to pay for the products, so they get a good rating). Maybe the easiest way would be to create a list of certified suppliers of quality micro-credentials, which would have to be assessed from time to time by third official parties. Or maybe a 270º tool could be developed: the micro-credential would be evaluated by the learners, by the companies, by the government...
