I thint this thing would be very useful even if not connected to web. If it could write everything to disk, not to web. Of course - volume of its memory will have to be enormous.

Also - it has to encrypt data with private key, and public key will be safe in home, so nobody can see your whole life when you will lost this thing, or sbd will steal it.

About crime prevention etc - there should be button that starts sending all data to police without encrypting it in real time.

I would buy one.