Biometric data subject to specific technical processing for biometric recognition purposes, whether in the form of identification or biometric authentication, should be considered as a special category of data. Thus, this consideration would be given to both the fingerprint, to which specific technical treatment is applied, when used for the purpose of authenticating the identity of a natural person, and the biometric signature obtained on a tablet, measuring the formation of letters, the direction of traits, pressure and other unique dynamic characteristics, insofar as it is submitted for specific technical treatment in order to confirm authorship.