"At the end of 2006, the Federal Rules of Civil Procedure got amended to address the question of electronic discovery in lawsuits. Not to be outdone, the Judicial Council of California has now proposed its own set of amendments.
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While the amended federal rules steered clear of providing a precise definition of what constitutes electronically stored information, it does cover information "stored in any medium" so far as it can be "retrieved and examined." In this way, the amended text avoids any specific definition that later could be outstripped by advances in technology.
The proposed California amendments take a different tack, referencing information that is stored in an electronic medium and relating to technology having "electrical, digital, magnetic, wireless, optical, electromagnetic, or similar capabilities." While this comes across as quite broad, the federal definition might be better, as it later may be less capable of evasion by a new technology."