The ambition is breathtaking: Using tools from Taser International Inc. (primarily a tiny camera worn on a police officer’s head), networking pipes from Cisco Systems Inc. (Nasdaq: CSCO), and a private cloud built by Equinix Inc. (Nasdaq: EQIX), Evidence.com means to do nothing less than revolutionize street law enforcement by capturing and saving every important moment in a cop’s day.

From arguments over speeding tickets through live-action footage of shootouts, the intent is to record it, then uplift it to a private cloud, all the time ensuring that the footage cannot be altered in any way by the police officers involved. This means the data becomes evidence that can decide how court cases play out.

So for Cisco, Taser, and Equinix a lot is riding on Evidence.com. If it works, that’s a shining proof of a new model of service that delivers benefits by turning real-world data into usable information — all without requiring capital expenditure on the part of the user.

But might it not work? Scott Testa, an assistant professor at Cabrini College and a longtime technology guru, says that “in theory” the Evidence.com offering “makes sense,” in large part because it plays into the reality that most police departments budget meager sums for IT. Buy the service in a package, using federal money, and that solves a local department’s IT problem.