The chip used in a mouse is about $5 and is a camera. Uses SPI.

Post : Magic Finger input device is a camera on your finger tip
URL : http://hackaday.com/2012/10/16/magic-finger-input-device-is-a-camera-on-your-finger-tip/
Posted : October 16, 2012 at 4:01 am
Author : Mike Szczys
Tags : camera, finger, fingertip, magic finger, mouse, thimble
Categories : peripherals hacks, wearable hacks

http://hackadaycom.files.wordpress.com/2012/10/magic-finger-input-device.png

What if we could do away with mice and just wear a thimble as a control interface? That's the concept behind Magic Finger. It adds as movement tracking sensor and RGB camera to your fingertip (http://labs.blogs.com/its_alive_in_the_lab/2012/10/magic-finger-the-future-of-touch-interaction.html) .

Touch screens are great, but what if you want to use any surface as an input? Then you grab the simplest of today's standard inputs: a computer mouse. But take that one step further and think of the possibilities of using the mouse as a graphic input device in addition to a positional sensor. This concept allows Magic Finger to distinguish between many different materials. It knows the difference between your desk and a piece of paper. Furthermore, it opens the door to data transfer through a code scheme they call a micro matrix. It's like a super small QR code which is read by the camera in the device.

The concept video found after the break shows off a lot of cool tricks used by the device. Our favorite is the tablet PC controlled by moving your finger on the back side of the device, instead of interrupting your line of sight and leaving fingerprints by touching the screen.

Read more of this post (http://hackaday.com/2012/10/16/magic-finger-input-device-is-a-camera-on-your-finger-tip/#more-88163)

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