In some cases, software to encrypt your connection is kept on a USB drive — therefore you can remain safe and secure even when using a public PC.
SurfEasy ($59.99) is a tiny USB key that fits into a credit card-shaped case to be kept in your wallet. When you plug it into a PC or Mac — be it your own computer or a communal one — it instantly launches its own password-protected browser and you’re good to go — no proxy or network settings to configure.
Your browsing session is handled through SurfEasy’s fast and secure private proxy network. Your IP address will be masked throughout the session.
A free alternative is called Tails, which can be downloaded and installed onto a USB stick to run independently of the computer‘s original operating system.
Like SurfEasy, it lets you browse the web anonymously — on virtually any computer — as all connections are channelled through the aforementioned Tor network.