Despite the fact that were I the judge I'd levy Rule 11 sanctions against these lawyers, I can't agree that it makes any difference that the file is only available with access to the user's computer which can be password protected. In a civil matter, like a divorce case in a jurisdiction where it matters, the court can compel the user to divulge the password, to not delete or modify the file, and to deliver the computer to an expert to extract subpoenaed information. I haven't kept up with all the Patriot Act era provisions, but it wouldn't be surprising if law enforcement could obtain a warrant effectively forcing similar disclosures despite the Fifth Amendment.
Even had Apple super-encrypted the file, users and providers (like Apple, ISPs, and Telcos) would nonetheless be vulnerable to legal compulsion to cooperate in providing information deemed by the courts to be material and relevant to some lawsuit or prosecution. Accordingly, it isn't entirely harmless if such information is recorded without the knowledge--actual or constructive--of the user. Even so, these plaintiffs are unlikely to plead that they are terrorists, serial bank robbers, or adulterers who were duped into recording their whereabouts, however imprecisely, and whose highly-developed sense of ethics prevents them from simply smashing the telltale devices instead of bringing a lawsuit.
Even had Apple super-encrypted the file, users and providers (like Apple, ISPs, and Telcos) would nonetheless be vulnerable to legal compulsion to cooperate in providing information deemed by the courts to be material and relevant to some lawsuit or prosecution. Accordingly, it isn't entirely harmless if such information is recorded without the knowledge--actual or constructive--of the user. Even so, these plaintiffs are unlikely to plead that they are terrorists, serial bank robbers, or adulterers who were duped into recording their whereabouts, however imprecisely, and whose highly-developed sense of ethics prevents them from simply smashing the telltale devices instead of bringing a lawsuit.