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"The smartphone, as used, is more an extension of the user's mind than simply a useful artifact." and "that we actually offload cognitive functions from our (internal) selves onto the phone" - an argument from Heidegger to 4th+5th Amendment rights: cacm.acm.org/magazines/2018/4/226363-smartphones-contents-of-the-mind-and-the-fifth-amendment/fulltext