$5 Bills

The fist thing to look for is the security strip. You can only see it when a light source is behind the bill. To view this, hold your bill up to a light and the security strip will appear. It should be located in exactly the location shown above.

If the security strip is not visible when held in front of a light or is visible without the light, it's fake.

Next, while holding it up to the light, a hologram image of the number "5" will appear on the front/right side of the bill. This image is not visible without the light source behind it. If you don't see this feature, it's counterfeit.

Next, turn the bill over so the back is facing up. Place a bright light source directly behind it and you will see multiple "5"s appear. This should be visible just to the right of center.