Tails is a live operating system that you can start on almost any computer. It aims at preserving your privacy and anonymity.
Tails or The Amnesic Incognito Live System is a security-focused Debian-based Linux distribution aimed at preserving privacy and anonymity.
All its outgoing connections are forced to go through Tor, and non-anonymous connections are blocked.
The system is designed to be booted as a live DVD or live USB, and will leave no digital footprint on the machine unless explicitly told to do so.