Radley Balko says, "My Reason.com column this week looks at the range of cameras, software, and other technology available for citizens interested in recording on-duty police officers."

Qik and UStream, two services available for both the iPhone and Android phones, allow instant online video streaming and archiving. Once you stop recording, the video is instantly saved online. Both services also allow you to send out a mass email or notice to your Twitter followers when you have posted a new video from your phone. Not only will your video of police misconduct be preserved, but so will the video of the police officer illegally confiscating your phone (assuming you continue recording until that point).

Neither Qik nor UStream market themselves for this purpose, and it probably would not make good business sense for them to do so, given the risk of angering law enforcement agencies and attracting attention from regulators. But it's hard to overstate the power of streaming and off-site archiving. Prior to this technology, prosecutors and the courts nearly always deferred to the police narrative; now that narrative has to be consistent with independently recorded evidence. And as examples of police reports contradicted by video become increasingly common, a couple of things are likely to happen: Prosecutors and courts will be less inclined to uncritically accept police testimony, even in cases where there is no video, and bad cops will be deterred by the knowledge that their misconduct is apt to be recorded.