IR Web cam in action!

By Phillip Torrone

Phillip Torrone

current: @adafruit - previous: MAKE, popular science, hackaday, engadget, fallon, braincraft ... howtoons, 2600...

View more articles by Phillip Torrone

@adafruit

March 11th, 2005

Make Photo pool Flickr member Mariusm posted…”I followed Geoff Johnson’s instructions and discovered that the back of $5 and $20 bills (but not $1) has an interesting security feature…” Check out the weird photo!

By Phillip Torrone

Phillip Torrone

current: @adafruit - previous: MAKE, popular science, hackaday, engadget, fallon, braincraft ... howtoons, 2600...

View more articles by Phillip Torrone

@adafruit

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