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Hi all, Original Author of the article here - glad to see so much interest and discussion of this topic. There are a few threads going on here but the main one seems to be: Should we care about "privacy" of information available in public, and if so, how do we set rules (Given that it's in public)? I think the answer to the first question is undoubtedly yes because of the way technology is advancing. Yes, we've always been able to see people in public, but we've never been able to do it in a rapid automated fashion on a mass scale, or catalog and query natiowide databases. This creates new implications for privacy. In the past the government simply didn't have the resources to know exactly what religious ceremonies, political meetings, protests every American was going to. Now they do. This may mean an expansion of 4th Amendment protections (@sharemywin mentioned the idea of a new amendment, but I think this is exactly what the 4th Amendment is for). In Jones the Supreme Court said you can't attach GPS devices to cars without a warrant, and 5 Justices said we may need this type of protection for location data generally. Since then many lower courts have applied this protection to location data generated from cell phones (even public locations), which I think is correct. As far as setting a standard, I think the best approach is to require 4th Amendment protections for location data generated from an electronic source/device. This is what a number of states have been doing to address demands for cell phone location data and police use of stringrays. It also directly goes to the issue that electronic devices are given government unprecedented power to record, store, and query our location data, which makes that data more sensitive and suseptible to abuse. |
The 4th Amendment - and specifically its warrant requirement - is often misunderstood to be about protecting individuals from government searches. Warrants will generally be granted, and the search of any particular individual is going to happen if the government wants it to. The protection for individuals happens later when evidence that was improperly obtained could be ruled inadmissible by the exclusionary rule. The search will probably happen, but the results of that search may not apply in court.
The warrant requirement is an attempt to protect society in general against threats like the writs of assistance that were imposed upon the colonies. From the perspective of an individual search, obtaining a warrant is a trivial speed bump.
If you wanted to search an entire city, on the other hand, those speed bumps serve as a rate limiter. It is just not possible for even a large, corrupt, overfunded and overstaffed police force to "particularly describe" what each search is for and get each one rubber stamped by a judge. Our police and judicial systems have many inefficiencies like this by design.
In modern times, we probably need to extend this idea to the public space, to impose some kind of new rate-limiter. It doesn't matter if the government can ask for occasional data, but allowing a continual collection and a permanent database is the kind of "general warrant" style collection that we need to prevent. The problem is when data is the aggregated, so we need to strongly rate limit the collection so there is no data to aggregate.
By the way - while license plate data is bad enough, I hope everybody remembers that they are making a detailed map of their movements and a graph of probably relationships when they carry a cell phone thanks to COTRAVELER. That slide from the Snowden archive didn't get a lot of press, but it is probably one of the more easily abused programs out of all of the recent revelations.