Transcript
Can police force you to give DNA, fingerprints, or other samples? Let’s look at your rights in Victoria.
Police can require you to give fingerprints in many cases, especially if you’re charged with an offence. DNA samples are more tightly controlled — often needing a court order unless you consent. For children and young people, the rules are even stricter. Importantly, you do have rights: police must follow proper procedures, explain what’s happening, and treat you with respect. If the correct process isn’t followed, evidence may be challenged in court. Refusing without a lawful excuse can lead to further charges, so always understand what’s required before responding.
This is general information, not legal advice. If police ask you for DNA or fingerprints, get legal advice before making any decisions.
Police sometimes ask people to provide fingerprints, DNA, or other forensic samples during an investigation. In Victoria, the law strictly regulates when police can make these requests and what authority they must rely on. This video explains the difference between fingerprinting and DNA-related procedures. It also explains when you can refuse, when consent is required, and when police must obtain a court order. The video outlines additional protections that apply to children and young people. Understanding these rules early can help you make informed decisions before forensic evidence becomes part of a case.
Why Forensic Evidence Matters in Criminal Cases
Victoria Police use forensic material to identify people and connect suspects to alleged offending. Investigators use fingerprints and biological material to confirm identity. They also use this material to link a person to a place or object, or to rule out other explanations. Courts often treat forensic evidence as highly significant. Because of that weight, the way police obtain it matters. If police act without proper authority or fail to follow required steps, a court may limit or exclude the evidence under the Evidence Act 2008 (Vic).
The Legal Framework in Victoria
The Crimes Act 1958 (Vic) governs fingerprinting and forensic sampling in Victoria. The Act does not give police a general or unlimited power to take forensic material. Instead, it separates fingerprints from other forms of forensic collection. The law then sets different legal requirements for each category. As police requests become more intrusive, the law demands stronger safeguards. Those safeguards include informed consent, senior police authorisation, or independent court oversight.
Fingerprinting Powers Under the Crimes Act 1958 (Vic)
Police can take fingerprints only in specific circumstances. For people aged 15 or over, police may take fingerprints if the person is reasonably suspected of committing certain offences, has been charged, or has been summonsed (Crimes Act 1958 (Vic) s 464K). Even then, the power remains conditional. Police must comply with information and recording requirements. Additional safeguards apply to children, including rules about who must be present (Crimes Act 1958 (Vic) ss 464K–464Q).
Forensic Procedures (Non-Fingerprint Samples)
Other forms of sampling operate under a separate statutory scheme. The Crimes Act regulates forensic procedures, including intimate and non-intimate procedures involving physical examination or the taking of certain body samples (Crimes Act 1958 (Vic) ss 464R–464ZA). The Act defines a “forensic procedure” so that it excludes fingerprints and DNA profile samples (Crimes Act 1958 (Vic) s 464).
DNA Profile Samples – A Separate Regime
DNA profile samples follow a different regulatory path. Police usually obtain these samples through methods such as a mouth swab or saliva sample. Unlike fingerprints, DNA profile information can be compared against databases in the future. For that reason, the Act imposes additional controls on when police may obtain DNA profile samples. The law also regulates how police may use, retain, and destroy that information.
Consent: When You Can Agree or Refuse
Police may ask a person to undergo a forensic procedure or provide a DNA profile sample by consent. The person must give informed consent before agreeing. Police must explain the purpose of the procedure or sample in language the person is likely to understand, and must comply with the specific informed-consent requirements that apply to DNA profile samples (Crimes Act 1958 (Vic) ss 464S, 464SD). If police fail to meet the statutory requirements, disputes about consent may arise later. That issue often becomes significant when the prosecution relies on the material at trial.
What Happens If You Refuse?
Refusal does not end the matter. Police must then rely on defined compulsory pathways. In serious matters, a senior police officer who has no involvement in the investigation may authorise certain non-intimate compulsory procedures if the statutory criteria apply (Crimes Act 1958 (Vic) s 464SA). In other situations, police must apply to the Magistrates’ Court for an order authorising a compulsory forensic procedure (Crimes Act 1958 (Vic) s 464T). These pathways introduce independent oversight. They also require police to justify the need for compulsion.
Additional Safeguards for Children
Additional safeguards protect children, and separate protections apply to people who require additional support during police processes. Police face strict limits when requesting forensic procedures from children. The Children’s Court plays a central role in that process. For example, police generally cannot request a forensic procedure from a child unless the Children’s Court has made the required order (Crimes Act 1958 (Vic) s 464U). The fingerprinting provisions also include age-based safeguards and presence requirements (Crimes Act 1958 (Vic) ss 464K–464Q). These rules reflect the increased need for oversight where vulnerability exists.
Problems often arise at the police station. Police may lawfully take fingerprints under the fingerprinting provisions. Officers may then ask for a mouth swab or another DNA sample. That second request triggers a different statutory regime with different legal thresholds. It does not operate as an automatic extension of fingerprinting.
Practical Steps If Police Request Fingerprints or DNA
A careful and deliberate response matters. If police request fingerprints or a DNA sample, ask what legal power they rely on and what process they intend to use. When police seek consent, pause before agreeing and obtain legal advice. If police rely on senior authorisation or a court order, comply safely. Then allow your lawyer to assess whether the police followed the statutory requirements and whether any challenge is available. Early advice can determine whether forensic material strengthens the prosecution’s case or becomes a point of challenge.
FAQs
Can police take my DNA if I have not been charged with an offence?
What happens if I agree to give a DNA sample and later regret it?
Are police allowed to take fingerprints during a police interview?
Do police have different powers when dealing with children or teenagers?
Can refusing to give DNA or fingerprints be used against me later?
How long can police keep my DNA or fingerprints?
Understanding your rights before agreeing to provide fingerprints, DNA, or any forensic sample can significantly affect the outcome of a criminal case. Early legal advice allows a lawyer to examine whether police are acting within their powers under the Crimes Act 1958 (Vic), assess whether proper consent was obtained, and determine whether any forensic material may be challenged or excluded.
If Victoria Police request fingerprints, a DNA sample, or any other forensic procedure, contact Doogue + George Criminal Lawyers on (03) 9670 5111 for confidential, experienced advice before making any decision.
