Q A four-digit passcode has 10,000 variations (zero to nine, to the power of four). A four-letter password has A to Z to the power of four, or 456,976 variations. Why is there so much pressure to adop

You’re already familiar with QR codes as a quick and easy way to access a web link. All right, it can be fiddly to dig your phone out of your pocket, bring up the camera and point it at the code. Or,

Instead of using an app or program to take notes, try the drafts feature in your webmail service. That way, your reminders and notes are accessible whether you’re sitting at your computer, out and abo

Some people say the safest place to store passwords is in a notebook. After all, a pen and paper can’t be hacked. But in practice, writing down full login details for every website and app you use is

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