I'm not a lawyer, but I could see an argument being made for a "numerical aspect" to privacy protections. The idea of a reasonable expectation of privacy as a

I'm not a lawyer, but I could see an argument being made for a "numerical aspect" to privacy protections. The idea of a reasonable expectation of privacy as a standard seems well supported, and I think it could apply to this situation. Certainly the police COULD track me when I'm out in public, but my expectation is that they won't unless they have a valid reason for doing so. So while I may not have an explicit legal protection against being tracked in public as an individual, I have an expectation that I'm not being tracked unless I'm the subject of an investigation. I suppose this is less of a numerical aspect as it is a reasonable expectation factor for the majority of people who would be tracked with pervasive drone surveillance. People just going about their business don't expect to be randomly tracked by the FBI, but most people would probably expect to be tracked if they were specifically being investigated. But like I said, I'm not a lawyer, so it might be impractical for the law to work that way. If so, then maybe a change in the law will be necessary if it becomes practical to engage in pervasive drone surveillance and it turns out that's what the FBI ends up doing.