METHOD AND DEVICE FOR PROCESSING BIOMETRIC DATA, BY DETERMINING FEATURES AND CLASSIFYING THE DATA

摘要

A method of generating reference data from current biometric data of an individual comprises the steps of generating feature values; letting the feature values form coordinates, which are combined in such manner that they define a current dot (35) in a space (31). The space (31) is divided into subspaces (33) which are represented by an associated class with a class denomination; selecting to which subspace (33) the current dot (35) belongs; and equating said reference data to the class denomination. The space (31) comprises a number of data dots (32) which correspond to a quantity of biometric data, collected in advance, of a number of individuals. The method allows great probability for the same reference data to be generated for repeated collections of the same biometric parameter or characteristic of one and the same person. The disclosure also includes a device operating according to the methods, and a method, system and processing unit for checking the right to access to sensitive information, as well as a method for checking if current biometric data is represented in a database.