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Hi Rita,

One of the simplest ways to do this I've seen recently is a plain  
piece of tempered glass over a box that was well lit from the sides.

Below the glass, inside the box, was a standard video camera zoomed  
in on the glass.

You squashed your thumb or finger onto the glass and got an excellent  
fingerprint image on the monitor nearby (you could port the image to  
your software/application as well.)

The beauty of this setup was that previous visitors' smudges, prints,  
etc. were always "over-ridden" by your real time image so there was  
no need to clean the glass (unless you wanted to!)

All in all, a highly evolved exhibit component!

Good Luck!


On Jan 3, 2007, at 10:42 AM, Rita Mukherjee Hoffstadt wrote:

> We'd like for visitors to be able to electronically magnify and  
> compare their fingerprints. We need a fingerprint scanner/camera  
> that has a webcam style USB video OR analog NTSC video output.

----------------------------------------------------------

Paul Orselli, President and Chief Instigator

Paul Orselli Workshop (POW!)
1684 Victoria Street
Baldwin, NY  11510

www.orselli.net

(516) 223-1043  voice
(516) 238-2797  mobile

The Great Big List of Exhibit Resources:  http://www.orselli.net/ 
sources.htm




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