/shrug
I'm personally of the opinion that everything we do that can be tracked, should be tracked, and held in a database only unlockable by a court order. It's technically no different from being placed under surveillance, and if you set the requirements for database access at a reasonable level possibly even more difficult to manage, though potentially far more rewarding for prosecutors, seeing as how the data would cover a much longer time period.
In regards to this particular issue, of warrantless searches, I'm vehemently opposed. Tracking is all well and good, so long as a warrant is involved on either the front or back end. If they're just collecting data out of suspicion, you'd better hope your suspicions are enough to convince a judge.
And yes, if you've done nothing wrong, you've got nothing to hide, blah blah blah.
Political tests have placed me in the "Libertarian Fascist" category though, so I could be the wrong person to discuss civil liberties with. I generally think the government should stay out of people's lives to the greatest possible extent... and when people break the law in some serious fashion, we should fire them out of a cannon into the sun. Three strikes and you're dead, habitual offenders are a drain on society. I don't care who you marry, or what you marry, unless you attempt to harm your spouse. I don't believe in lengthy appeals processes. If you couldn't prove your innocence once, I doubt you'll be able to do it again. One appeal onry, then we off you.
I also don't believe in prison, as prison is primarily a place to send criminals so that they might learn to become better criminals. Brief but painful public punishments are a fair to middin' deterrent, based on human history. Reeducation and reform also have their places. Cross the threshold into murder, attempted murder, or some particularly grievous assault, and we're talking cannon into the sun time though.