Entries Tagged "cameras"

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This Suspicious Photography Stuff Is Confusing

See:

Last week, Metro Transit Police received a report from a rider about suspicious behavior at the L’Enfant Plaza station and on an Orange Line train to Vienna.

The rider told Metro he saw two men acting suspiciously and videotaping platforms, trains and riders.

“The men, according to the citizen report, were trying to be inconspicuous, holding the cameras at their sides,” Metro spokesman Steven Taubenkibel says.

The rider was able to photograph the men who were videotaping and sent the photo to Metro Transit Police.

I assume the rider took that photo inconspicuously, too, which means that he’s now suspicious.

How will this all end?

EDITED TO ADD (12/27): In the comments I was asked about reconciling good profiling with this sort of knee-jerk photography=suspicious nonsense. It’s complicated, and I wrote about it here in 2007. This, from 2004, is also relevant.

Posted on December 27, 2010 at 6:12 AM • View Comments

Recording the Police

I’ve written a lot on the “War on Photography,” where normal people are harassed as potential terrorists for taking pictures of things in public. This article is different; it’s about recording the police:

Allison’s predicament is an extreme example of a growing and disturbing trend. As citizens increase their scrutiny of law enforcement officials through technologies such as cell phones, miniature cameras, and devices that wirelessly connect to video-sharing sites such as YouTube and LiveLeak, the cops are increasingly fighting back with force and even jail time—and not just in Illinois. Police across the country are using decades-old wiretapping statutes that did not anticipate iPhones or Droids, combined with broadly written laws against obstructing or interfering with law enforcement, to arrest people who point microphones or video cameras at them. Even in the wake of gross injustices, state legislatures have largely neglected the issue. Meanwhile, technology is enabling the kind of widely distributed citizen documentation that until recently only spy novelists dreamed of. The result is a legal mess of outdated, loosely interpreted statutes and piecemeal court opinions that leave both cops and citizens unsure of when recording becomes a crime.

This is all important. Being able to record the police is one of the best ways to ensure that the police are held accountable for their actions. Privacy has to be viewed in the context of relative power. For example, the government has a lot more power than the people. So privacy for the government increases their power and increases the power imbalance between government and the people; it decreases liberty. Forced openness in government—open government laws, Freedom of Information Act filings, the recording of police officers and other government officials, WikiLeaks—reduces the power imbalance between government and the people, and increases liberty.

Privacy for the people increases their power. It also increases liberty, because it reduces the power imbalance between government and the people. Forced openness in the people—NSA monitoring of everyone’s phone calls and e-mails, the DOJ monitoring everyone’s credit card transactions, surveillance cameras—decreases liberty.

I think we need a law that explicitly makes it legal for people to record government officials when they are interacting with them in their official capacity. And this is doubly true for police officers and other law enforcement officials.

EDITED TO ADD: Anthony Graber, the Maryland motorcyclist in the article, had all the wiretapping charges cleared.

Posted on December 21, 2010 at 1:39 PM • View Comments

Sometimes CCTV Cameras Work

Sex attack caught on camera.

Hamilton police have arrested two men after a sex attack on a woman early today was caught on the city’s closed circuit television (CCTV) cameras.

CCTV operators contacted police when they became concerned about the safety of a woman outside an apartment block near the intersection of Victoria and Collingwood streets about 5am today.

Remember, though, that the test for whether the surveillance cameras are worth it is whether or not this crime would have been solved without them. That is, were the cameras necessary for arrest or conviction?

My previous writing on cameras.

EDITED TO ADD (12/17): When I wrote “remember, though, that the test for whether the surveillance cameras are worth it is whether or not this crime would have been solved without them,” I was being sloppy. That’s the test as to whether or not they had any value in this case.

Posted on December 13, 2010 at 2:01 PM • View Comments

Crowdsourcing Surveillance

Internet Eyes is a U.K. startup designed to crowdsource digital surveillance. People pay a small fee to become a “Viewer.” Once they do, they can log onto the site and view live anonymous feeds from surveillance cameras at retail stores. If they notice someone shoplifting, they can alert the store owner. Viewers get rated on their ability to differentiate real shoplifting from false alarms, can win 1000 pounds if they detect the most shoplifting in some time interval, and otherwise get paid a wage that most likely won’t cover their initial fee.

Although the system has some nod towards privacy, groups like Privacy International oppose the system for fostering a culture of citizen spies. More fundamentally, though, I don’t think the system will work. Internet Eyes is primarily relying on voyeurism to compensate its Viewers. But most of what goes on in a retail store is incredibly boring. Some of it is actually voyeuristic, and very little of it is criminal. The incentives just aren’t there for Viewers to do more than peek, and there’s no obvious way to discouraging them from siding with the shoplifter and just watch the scenario unfold.

This isn’t the first time groups have tried to crowdsource surveillance camera monitoring. Texas’s Virtual Border Patrol tried the same thing: deputizing the general public to monitor the Texas-Mexico border. It ran out of money last year, and was widely criticized as a joke.

This system suffered the same problems as Internet Eyes—not enough incentive to do a good job, boredom because crime is the rare exception—as well as the fact that false alarms were very expensive to deal with.

Both of these systems remind me of the one time this idea was conceptualized correctly. Invented in 2003 by my friend and colleague Jay Walker, US HomeGuard also tried to crowdsource surveillance camera monitoring. But this system focused on one very specific security concern: people in no-mans areas. These are areas between fences at nuclear power plants or oil refineries, border zones, areas around dams and reservoirs, and so on: areas where there should never be anyone.

The idea is that people would register to become “spotters.” They would get paid a decent wage (that and patriotism was the incentive), receive a stream of still photos, and be asked a very simple question: “Is there a person or a vehicle in this picture?” If a spotter clicked “yes,” the photo—and the camera—would be referred to whatever professional response the camera owner had set up.

HomeGuard would monitor the monitors in two ways. One, by sending stored, known, photos to people regularly to verify that they were paying attention. And two, by sending live photos to multiple spotters and correlating the results, to many more monitors if a spotter claimed to have spotted a person or vehicle.

Just knowing that there’s a person or a vehicle in a no-mans area is only the first step in a useful response, and HomeGuard envisioned a bunch of enhancements to the rest of that system. Flagged photos could be sent to the digital phones of patrolling guards, cameras could be controlled remotely by those guards, and speakers in the cameras could issue warnings. Remote citizen spotters were only useful for that first step, looking for a person or a vehicle in a photo that shouldn’t contain any. Only real guards at the site itself could tell an intruder from the occasional maintenance person.

Of course the system isn’t perfect. A would-be infiltrator could sneak past the spotters by holding a bush in front of him, or disguising himself as a vending machine. But it does fill in a gap in what fully automated systems can do, at least until image processing and artificial intelligence get significantly better.

HomeGuard never got off the ground. There was never any good data about whether spotters were more effective than motion sensors as a first level of defense. But more importantly, Walker says that the politics surrounding homeland security money post-9/11 was just too great to penetrate, and that as an outsider he couldn’t get his ideas heard. Today, probably, the patriotic fervor that gripped so many people post-9/11 has dampened, and he’d probably have to pay his spotters more than he envisioned seven years ago. Still, I thought it was a clever idea then and I still think it’s a clever idea—and it’s an example of how to do surveillance crowdsourcing correctly.

Making the system more general runs into all sorts of problems. An amateur can spot a person or vehicle pretty easily, but is much harder pressed to notice a shoplifter. The privacy implications of showing random people pictures of no-mans lands is minimal, while a busy store is another matter—stores have enough individuality to be identifiable, as do people. Public photo tagging will even allow the process to be automated. And, of course, the normalization of a spy-on-your-neighbor surveillance society where it’s perfectly reasonable to watch each other on cameras just in case one of us does something wrong.

This essay first appeared in ThreatPost.

Posted on November 9, 2010 at 12:59 PM • View Comments

The Mahmoud al-Mabhouh Assassination

Remember the Mahmoud al-Mabhouh assassination last January? The police identified 30 suspects, but haven’t been able to find any of them.

Police spent about 10,000 hours poring over footage from some 1,500 security cameras around Dubai. Using face-recognition software, electronic-payment records, receipts and interviews with taxi drivers and hotel staff, they put together a list of suspects and publicized it.

Seems ubiquitous electronic surveillance is no match for a sufficiently advanced adversary.

Posted on October 12, 2010 at 6:12 AM • View Comments

DHS Still Worried About Terrorists Using Internet Surveillance

Profound analysis from the Department of Homeland Security:

Detailed video obtained through live Web-based camera feeds combined with street-level and direct overhead imagery views from Internet imagery sites allow terrorists to conduct remote surveillance of multiple potential targets without exposing themselves to detection.

Cameras, too.

Remember, anyone who searches for anything on the Internet may be a terrorist. Report him immediately.

Posted on September 16, 2010 at 6:34 AM • View Comments

Burglary Detection through Video Analytics

This is interesting:

Some of the scenarios where we have installed video analytics for our clients include:

  • to detect someone walking in an area of their yard (veering off of the main path) that they are not supposed to be;
  • to send an alarm if someone is standing too close to the front of a store window/front door after hours;
  • to alert security guards about someone in a parkade during specific hours;
  • to count the number of people coming into (and out of) a store during the day;

In the case of burglary prevention, getting an early warning about someone trespassing makes a huge difference for our response teams. Now, rather than waiting for a detector in the house to trip, we can receive an alarm signal while a potential burglar is still outside.

Effectiveness is going to be a question of limiting false positives.

Posted on July 14, 2010 at 12:54 PM • View Comments

Filming the Police

In at least three U.S. states, it is illegal to film an active duty policeman:

The legal justification for arresting the “shooter” rests on existing wiretapping or eavesdropping laws, with statutes against obstructing law enforcement sometimes cited. Illinois, Massachusetts, and Maryland are among the 12 states in which all parties must consent for a recording to be legal unless, as with TV news crews, it is obvious to all that recording is underway. Since the police do not consent, the camera-wielder can be arrested. Most all-party-consent states also include an exception for recording in public places where “no expectation of privacy exists” (Illinois does not) but in practice this exception is not being recognized.

Massachusetts attorney June Jensen represented Simon Glik who was arrested for such a recording. She explained, “[T]he statute has been misconstrued by Boston police. You could go to the Boston Common and snap pictures and record if you want.” Legal scholar and professor Jonathan Turley agrees, “The police are basing this claim on a ridiculous reading of the two-party consent surveillance law—requiring all parties to consent to being taped. I have written in the area of surveillance law and can say that this is utter nonsense.”

The courts, however, disagree. A few weeks ago, an Illinois judge rejected a motion to dismiss an eavesdropping charge against Christopher Drew, who recorded his own arrest for selling one-dollar artwork on the streets of Chicago. Although the misdemeanor charges of not having a peddler’s license and peddling in a prohibited area were dropped, Drew is being prosecuted for illegal recording, a Class I felony punishable by 4 to 15 years in prison.

This is a horrible idea, and will make us all less secure. I wrote in 2008:

You cannot evaluate the value of privacy and disclosure unless you account for the relative power levels of the discloser and the disclosee.

If I disclose information to you, your power with respect to me increases. One way to address this power imbalance is for you to similarly disclose information to me. We both have less privacy, but the balance of power is maintained. But this mechanism fails utterly if you and I have different power levels to begin with.

An example will make this clearer. You’re stopped by a police officer, who demands to see identification. Divulging your identity will give the officer enormous power over you: He or she can search police databases using the information on your ID; he or she can create a police record attached to your name; he or she can put you on this or that secret terrorist watch list. Asking to see the officer’s ID in return gives you no comparable power over him or her. The power imbalance is too great, and mutual disclosure does not make it OK.

You can think of your existing power as the exponent in an equation that determines the value, to you, of more information. The more power you have, the more additional power you derive from the new data.

Another example: When your doctor says “take off your clothes,” it makes no sense for you to say, “You first, doc.” The two of you are not engaging in an interaction of equals.

This is the principle that should guide decision-makers when they consider installing surveillance cameras or launching data-mining programs. It’s not enough to open the efforts to public scrutiny. All aspects of government work best when the relative power between the governors and the governed remains as small as possible—when liberty is high and control is low. Forced openness in government reduces the relative power differential between the two, and is generally good. Forced openness in laypeople increases the relative power, and is generally bad.

EDITED TO ADD (7/13): Another article. One jurisdiction in Pennsylvania has explicitly ruled the opposite: that it’s legal to record police officers no matter what.

Posted on June 16, 2010 at 1:36 PM • View Comments

Alerting Users that Applications are Using Cameras, Microphones, Etc.

Interesting research: “What You See is What They Get: Protecting users from unwanted use of microphones, cameras, and other sensors,” by Jon Howell and Stuart Schechter.

Abstract: Sensors such as cameras and microphones collect privacy-sensitive data streams without the user’s explicit action. Conventional sensor access policies either hassle users to grant applications access to sensors or grant with no approval at all. Once access is granted, an application may collect sensor data even after the application’s interface suggests that the sensor is no longer being accessed.

We introduce the sensor-access widget, a graphical user interface element that resides within an application’s display. The widget provides an animated representation of the personal data being collected by its corresponding sensor, calling attention to the application’s attempt to collect the data. The widget indicates whether the sensor data is currently allowed to flow to the application. The widget also acts as a control point through which the user can configure the sensor and grant or deny the application access. By building perpetual disclosure of sensor data collection into the platform, sensor-access widgets enable new access-control policies that relax the tension between the user’s privacy needs and applications’ ease of access.

Apple seems to be taking some steps in this direction with the location sensor disclosure in iPhone 4.0 OS.

Posted on May 24, 2010 at 7:32 AM • View Comments

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Sidebar photo of Bruce Schneier by Joe MacInnis.