Member States should inform all persons required by this Regulation to give biometric data of their obligation to do so. Member States should also explain to those persons that it is in their interests to fully and immediately cooperate with the procedure by providing their biometric data. Where a Member State’s national law lays down administrative measures that provide for the possibility of taking biometric data by means of coercion as a last resort, those measures are to fully respect . Only in duly justified circumstances and as a last resort, having exhausted other possibilities, can a proportionate degree of coercion be used to ensure the compliance of third-country nationals or stateless persons who are deemed to be vulnerable persons, and minors, with the obligation to provide biometric data.