Body samples may only be taken by a registered medical practitioner, a police officer or CNB officer who has received training, or any other suitably qualified or trained person duly appointed by the Commissioner of Police as an authorized person. Before a body sample is taken, the person taking the sample must satisfy himself that the taking of the sample does not endanger the person from whom the sample is taken. Every body sample is required to be sent to an authorised analyst for forensic DNA analysis. A person who fails without reasonable excuse to submit to the taking of photographs and finger impressions, provide registrable particulars and other particulars, or submit to the taking of body samples commits an offence and is liable on conviction to a fine not exceeding $1,000, imprisonment not exceeding one month, or both. In addition, he can be caused to be photographed, and his finger impressions and body samples may be taken, using such force as is reasonably necessary. However, blood samples and intimate samples may not be taken without consent. (An intimate sample is any body sample obtained by means of any invasive procedure, but does not include samples to be obtained from (a) the genital or anal area of a person's body; (b) a person's body orifice other than the mouth; or (c) the breasts of a woman.) The Commissioner of Police is required to maintain a register of all photographs, finger impressions, registrable particulars; and a DNA database. Information stored in the register and DNA database may be used for a variety of purposes, including comparison with other information obtained in the course of investigations into offences. Where an arrested person has been taken is released without having been convicted of any offence or placed on detention or supervision under the Act, all photographs, finger impressions, records of particulars or body samples taken from him must be removed from the register and DNA database. These provisions were introduced in 2004. Senior Minister of State for Home Affairs and Law, Associate Professor Ho Peng Kee, said: "This amendment will ensure that our DNA database is more comprehensive. In turn, this will help improve intelligence and focus investigative efforts for more effective crime solving." Between 1994 and 2003, 60% of detainees and supervisees were found to have conviction records. The provisions of the Act are in addition to and not in derogation of the provisions of any other written law and, in the event of conflict between any provision of this Act and any provision of any other written law, the provisions of the Act prevail.