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How Do QR Codes Work? 2D Barcodes Explained
science.howstuffworks.com/innovation/repurposed-inventions/2d-barcodes.htm
2D barcodes are being used in some interesting ways. Visit HowStuffWorks to learn everything about 2D barcodes.
How can a bar code save your life?
science.howstuffworks.com/innovation/repurposed-inventions/barcode-save-your-life.htm
How can a barcode save your life? Visit HowStuffWorks to learn how a barcode can save your life.
Plastic Numbers: Breaking Down Recycling Codes
science.howstuffworks.com/environmental/green-tech/sustainable/question217.htm
There are seven different numbers you might see on a plastic container. And each number has its own meaning.
The Waffle House Index Is at Code Red; That's Not Good
people.howstuffworks.com/waffle-house-index.htm
What is the Waffle House Index anyway, and does the Federal Emergency Management Agency really use it to gauge local disasters?
What Do the Numbers on Those Tiny Produce Stickers Tell Us?
money.howstuffworks.com/numbers-produce-stickers.htm
When you buy most fruits and vegetables in a supermarket, you might see that they're individually tagged with a sticker and a bar code. There's a lot of information in that four-digit code!
What Do Digits in Phone Numbers Mean?
electronics.howstuffworks.com/question659.htm
The phone number you dial to call somebody is basically an address, similar to the street address of your home. Learn how phone numbers work.
How does a logic bomb work?
computer.howstuffworks.com/logic-bomb.htm
Logic bombs can cripple a company's computer system by revealing or destroying sensitive information. Learn how logic bombs work.
How CAPTCHA Works
computer.howstuffworks.com/captcha.htm
CAPTCHA is a security test given to prevent computers from filling out forms on the Internet. Learn more about How CAPTCHA Works.
How to Convert Binary Into Decimal (and Vice Versa)
science.howstuffworks.com/math-concepts/binary-to-decimal.htm
With a little patience, you can master this trick of converting binary code to decimals - and have fun doing it!
Why is it that some Web pages seem to trap me so I can't get out?
computer.howstuffworks.com/internet/basics/question249.htm
I accidentally got into a Web site the other day that would not let me out. Even when I tried to close the window, it would pop up again -- it was unbelievable! How do they do that?