The present is that I have a usb flash, 16 GB, I have ubuntu on it and my data, and I can boot it in my home computer, in my work computer, on a friend computer even if it's got windows, when needed. Everywhere it boots, it's my system and my data, and I can keep it in my pocket.

The future, is I do the very same thing with phones (phones? pocket computers with voice transceiving ability, among other). Maybe into the sim card or similar, at least 64 GB with some local cryptography. Put it into the phone, boot, and ta-da! my operating system (Debian for phones?), my data, my personalizations.

This is my vision