The real concern isn't equality of control/power...though with full transparency, there will be equality: while the officer is pulling up your record (nominally clean, for the vast majority of citizens), you can use your trio/iphone/whatever to pull up a list of all complaints/citations for that officer, including a history of the last dozen/50/whatever people he's queried (in case there's a disturbing pattern, etc.), and assure that those "big brother" cameras and mics are recording the entire encounter...not an issue if you're law-abiding, but possibly career-threatening to the officer if he's not properly doing his job...especially if you send a text link of the live footage to a friend and ask them to review it and post it to youtube if they don't hear from you in the next 20 minutes...all things possible with true transparency.

The real concern is that once those in "power" have the surveillance technology, there's no way to stop them from using it. The police officer doesn't need you to willfully disclose your name to add you to a "secret terrorist watch list"...once that list exists, they can put your name on it whether they talk to you or not. The only possible way to counteract this is to remove as much of the secrecy as possible...yes he might add you to a "not-so-secret terrorist watch list", but as long as it's "not-so-secret", you'll be able to find out, and fight back.