Yes, it is possible. Identification of persons on the general level lies within the competence of Police authorities according to Section 63 of the Police Act, Police authorities may control the identity of persons in a broad variety of various cases referred to in the Police Act. Within the framework of criminal proceeding, identity of persons involved in proceedings is mandatorily verified - e.g. witnesses, suspects/accused persons etc. On judicial level, there are also specialized provisions of the Code of Criminal Procedure regulating identification of persons. These include identification by recognition - so called police line-up (Section 104b of Code of Criminal Procedure) and bodily examination (taking biological samples) for DNA analysis (Section 114 of Code of Criminal Procedure).