(1) This section applies to a person who volunteers to have a forensic procedure carried out for the purposes of placing information obtained from the analysis of the person's forensic material on the missing persons index.
(2) This section applies--(a) to evidence of forensic material, or evidence consisting of forensic material, taken from a person to whom this section applies by a forensic procedure, and(b) to evidence of any results of the analysis of the forensic material, and(c) to any other evidence made or obtained as a result of or in connection with the carrying out of the forensic procedure.
(3) If this section applies, evidence described in subsection (2) is not admissible in any proceedings against the person in a court, but may be admissible if adduced in such proceedings by the person.
(4) This section extends to a person who volunteered to undergo a forensic procedure before the commencement of this section.