Aren't the keys encrypted with a PIN of your own chosing which you set and verify in the app?
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As a side note, it seems to me that what you call "ulterior motive" is essentially vendor lock-in and I don't think that qualifies as an "ulterior motive".
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As a side note, it seems to me that what you call "ulterior motive" is essentially vendor lock-in and I don't think that qualifies as an "ulterior motive".