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How Chip and PIN Credit Cards Work

money.howstuffworks.com/personal-finance/debt-management/chip-and-pin-credit-cards.htm

Long popular in other parts of the world, chip and PIN credit cards seem finally headed for the U.S. Learn about Chip and PIN cards at HowStuffWorks.

How to Test Brake Caliper Guide Pins

auto.howstuffworks.com/auto-parts/brakes/brake-tests/how-to-test-brake-caliper-guide-pins.htm

Testing brake caliper guide pins requires a bit of know-how. Visit HowStuffWorks to learn about testing brake caliper guide pins.

When Medieval Pilgrims Wore Badges to Ward Off Plague

history.howstuffworks.com/european-history/plague-badges.htm

The tin or lead pins medieval pilgrims wore on their hats or cloaks, some playfully risqué, were meant to protect against plague.

1955, 1956, 1957 Gaylord

auto.howstuffworks.com/1955-1957-gaylord.htm

The 1955-1957 Gaylord was a luxury vehicle designed by the heirs to the bobby-pin fortune. See pictures and a profile of the 1955-1957 Gaylord.

How ATMs Work

money.howstuffworks.com/personal-finance/banking/atm.htm

''You can stop at an ATM, enter a PIN and leave with cash. Learn about the machines that give you money and the network that approves the transactions!''

What's the Most Venomous Spider in the World?

animals.howstuffworks.com/arachnids/deadliest-spider.htm

The deadliest spider is hard to pin down because poisonous spiders have varied effects on their victims. Read about contenders for the deadliest spider.

How do lock pick guns work?

home.howstuffworks.com/home-improvement/household-safety/lock-pick-gun.htm

Lock pick guns work on the same principle as raking a lock by pushing up the pins. Learn how lock pick guns work in this article.

How Bowling Pinsetters Work

entertainment.howstuffworks.com/pinsetter.htm

If you've ever been to a bowling alley, you know that one of the coolest things is how the pins get reset. How does it work? Take a peek at the machinery behind the scenes!

How Grenades Work

science.howstuffworks.com/grenade.htm

Grenades are a devastatingly effective weapon on the battlefield. Find out what happens when a soldier pulls the pin and tosses one of these miniature bombs at the enemy.

How do you pick a master lock?

home.howstuffworks.com/home-improvement/household-safety/pick-master-lock.htm

To open a lock, the bottom pins must be aligned so they're all below the shear line. Learn how to pick a master lock in this article.

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