On 27.09.2021, more than 150 criminal investigation authorities in Switzerland (cantonal police commands, public and senior public prosecutors' offices, governor's offices, courts) were written to with a letter in the name of the association "We for you". In this letter, reference is made - with regard to the certificate obligation - to our website and the legal analysis available on it. Based on this analysis, we informed the letter recipients that the certificate obligation lacks a legal basis. In this context, we also pointed out that the measures to enforce the certificate obligation also lack a legal basis. We urged the criminal investigation authorities to act in good faith and to thoroughly check the measures taken in connection with the obligation to provide a certificate for their compliance with the law before they are unlawfully enforced.