
In this article I discuss the increasing prevalence of Police Facial Recognition Cameras, whether their use infringes civil liberties/ rights and what you can do if you have been wrongfully arrested or detained as a result of Facial Recognition technology.
As an expert solicitor in claims against the Police, I am being increasingly consulted by people who have been the ‘mistaken identity’ victims of wrongful arrest due to Police facial recognition cameras. I expect such consultations will only increase as the use of this technology becomes ever more ubiquitous.
What is facial recognition technology?
Data obtained by the Guardian newspaper and Liberty Investigates found that the number of faces scanned by live facial recognition cameras last year doubled to near 5 million, and these figures are surely bound to rapidly increase as more and more Forces follow the trial first blazed by the Metropolitan Police and South Wales Police.
The Police are currently using three different types of facial recognition –
- Retrospective Facial Recognition (RFR)
- Operator Initiated Facial Recognition (OIFR)
- Live Facial Recognition (LFR).
Retrospective Facial Recognition
Retrospective Facial Recognition (RFR) techniques are, as the name suggests, applied after a crime has been reported, and as part of the Police investigative process. Images of the suspect, taken from such sources as CCTV, mobile phone, dashcam or doorbell footage are fed into the RFR system which then compares them to the ‘mug shots’ of previous arrestees which have been retained on the Police National Database (PND).
When the RFR system flags a potential match, the accuracy of that match is then required to be reviewed by the investigating Officer to ensure accuracy, before an arrest attempt is made.
The benefits of automating this part of the criminal investigative process do seem quite obvious and are hard to argue against – provided that the ‘artificial intelligence’ result is not unthinkingly accepted by the human beings involved without the application of reason and common sense; and assuming, of course, that the result has not been ‘contaminated’ by data inputting or recording errors.
Operator Initiated Facial Recognition
Operator Initiated Facial Recognition (OIFR) is, effectively, an app on Police Officer’s phones, which they can use to photograph a “person of interest” and check their identity. The Police position is that this is a reasonable and proportionate alternative to arrest. If you are not who they think you are, the app should confirm this, and you should be allowed on your way.
However, the introduction of this technology must not be allowed to be used by the Police as a ‘backdoor’ to circumvent the long- standing tradition that you do not have to identify yourself to an officer (if he does not already reasonably suspect you of a crime), unless you are in control of a vehicle, and if a person has been detained, without arrest, for the purposes of being scanned for an OIFR check, and that result is negative – they will probably have the right to claim compensation for wrongful arrest, even if only for a short period of time.
Live Facial Recognition
The deployment of Live Facial Recognition (LFR) technology is probably the most controversial of these three practices. It has principally been spear-headed by the Metropolitan Police and South Wales Police. Other Forces are bound to follow, as the speed of change picks up.
Mobile LFR units (i.e. vans fitted with cameras) are deployed to locations where there are likely to be large crowds, in order to scan the faces of passersby in real time, comparing those faces to a ‘watch list’ of wanted individuals, identifying matches as fast as only an AI can think (i.e. in the blink of an eye), whilst the person is still in the vicinity of the LFR van. The system will then ping an alert so that its flesh and blood policing brothers can take action – if appropriate.
Home Office guidance makes it clear the buck for arrest continues to stop with the Officer on the grounds that all possible matches are only that – possibilities. Rules governing the need for reasonable suspicion and necessity for arrest, set down by the Police and Criminal Evidence Act 1984 (PACE), and which enable those who have been wrongly arrested in this country to seek restitution, remain fully in-play in these scenarios and the Police must not allow the AI system to replace their own brains or derogate reason, respect and dignity, or so we are promised –
“Facial recognition technology will never replace the need for human judgment, insight and empathy. This is not automated decision making – Police Officers will always make the decisions about whether and how to use any suggested matches.”
If the LFR system does not make a match between your face and that of a person on the watch list (that has been inputted into the system for this particular deployment), then your biometric data, i.e. the image/analysis of your facial features is supposed to be immediately and automatically deleted.
Given such parameters, I personally have no problem with the use of this technology in principle. The Police make a fair point when they say that this is really just a much more efficient, and hopefully more foolproof version, of the system of daily briefings that Officers have always undergone, wherein they are provided with the images of suspects to be on the lookout for – particularly in given areas or at certain times and events. Now, however, rather than each Officer on patrol having only one pair of eyes, the LFR system has a ‘thousand eyes’ and obvious technological advantages over human eyesight and memory.
In this respect, therefore, you could see the LFR camera van as the natural evolution of the age old ‘wanted poster’. It is not an infringement of civil liberties for an offender to be wary about going to a social or sporting event, or other busy ‘public square’ environment, for fear of being identified by LFR and I am not the type of lawyer who turns into a Luddite at the mere thought of such technology. The Police can pull you out of a crowd right now and arrest you on the basis of human assessment that you match the appearance of a suspect. In that sense nothing has changed.
It is not, in my opinion, accurate to describe LFR surveillance as turning “us all into walking ID cards [and] the streets of Britain into Police line- ups” (Big Brother Watch/ Liberty Investigates). Unless our records are already in Police databases in accordance with existing laws, our facial images will bring only a blank, and will not be retained. It is a gross exaggeration to suggest that this technology is a tool for tyranny, and that the next step is a Big Brother state, an authoritarian dystopia such as China. All power can be misused, but that doesn’t mean we need to be frightened of it and keep the switches off. It just means that, as ever, the public, in conjunction with expert lawyers like me, need to police the Police’s use of the technology and hold them to account when they overstep the bounds, make mistakes and cause harm.
In this sense, LFR cameras can be equated to the now- commonplace ANPR cameras on our roads, which can be used by the Police to track vehicles in near real time or build up a historical map of their past journeys. LFR does not go as far as that, because our faces are not numberplates and their data is not being stored once scanned, unless a match with the ‘watch list’ occurs. As I have said; whilst I think it is absolutely crucial to uphold the traditions of British justice and Policing by Consent, I do not think that the best way to do this is to try to (futilely) live in the past and seek to deny the Police the available tools of the modern era of Artificial Intelligence and pervasive public video surveillance. To do so would be an exercise doomed to failure, and ultimately counter-productive.
I don’t call for the cameras to be turned off: indeed, I have repeatedly praised the benefits to justice of the prevalence of video recording devices – both Police body cameras and private citizen’s mobile phones – and called for them to be turned on more often. My case work has long since convinced me of the social good that mobile phones serve, in re-dressing the old imbalance between the word of a Police Officer and that of a member of the public.
Policing by Consent?
Police Forces can make a persuasive case as to why they should be allowed to utilise this technology, particularly LFR. Rather than it being a system designed to allow the State to surveil ordinary citizens, LFR is effectively watching for the faces of “persons of interest” from a pre-determined watch list and therefore ‘looking through’ everybody else as if they weren’t there.
Police justifications for LFR include –
- locating and arresting those already wanted for criminal offences
- preventing people who may cause harm from entering an area (e.g. people subject to football banning orders)
- locating people whom intelligence suggests may be at risk of harm, or pose a risk to others (e.g. missing persons; stalkers; suspected terrorists).
Such uses are naturally likely to garner public support. The Guardian article referred to above quotes Lindsey Chiswick, Director of Intelligence at the Met and the National Police Chief Council Lead on Facial Recognition, quoting surveys indicating that 80% of Londoners were in support of the Police using facial recognition cameras.
This concludes the first part of my blog post: next week I will address the issue of ‘ethnic inequalities’ – are these systems mis-identifying the faces of black people more often than white? – and address what everyone can do if they have been the victim of a wrongful arrest as a result of Facial Recognition.
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