The usability of passwords

Security companies and IT people constantly tell us that we should use complex and difficult passwords. This is bad advice, because you can actually make usable, easy to remember and highly secure passwords. In fact, usable passwords are often far …

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How much should you pay for a sandwich?

Tuesday: up at 04.00 to leave the house at 04.30 to catch a flight from Heathrow. I needed to fill up with petrol on the way to the airport. So I stopped at the 24 hour BP petrol station near …

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