I am regularly asked what the average Internet user can do to ensure his security. My first answer is usually 'Nothing; you're screwed'.
Bruce SchneierID can be hijacked, and cards can be faked. All of the 9/11 terrorists had fake IDs, yet they still got on the planes. If the British national ID card can't be faked, it will be the first on the planet.
Bruce SchneierThere are two types of encryption: one that will prevent your sister from reading your diary and one that will prevent your government.
Bruce SchneierPeople don't understand computers. Computers are magical boxes that do things. People believe what computers tell them.
Bruce Schneier