Tom Babinszki is looking for the first electronic money identifier for the blind. Can anyone help?
I am looking for the first electronic money identifier for the blind.
Here is the information I have: It was developed by NASA in the early 1970's, and produced by Marchak Engineering, which doesn't appear to be in business today.
Here is a description of the device:
"The first reliable paper money identifier to aid blind business persons has been developed from NASA technology. The device identifies paper money by its sound "signature." As a bill is passed under a light source, a photo-transistor measures changes in the bill's light patterns. These changes are converted into "beeping" sounds by an oscillator. Since each denomination of paper money has a different pattern a different series of tones is given off. These differences are easily identified after only about three hours of practice. NASA technology which led to development of the device stems from a technique for the semi-automatic inspection of microfilm records first reported in 1969. The
Marchak Engineering and Manufacturing Co., Austin, Tex., produces the device commercially."
Also, recently somebody was selling a photo of the device on eBay if it helps to identify the device:
I am looking for further information about the device, practically all I have is the above quote. I would appreciate any information or any contacts. Ideally, I would love to get one of these devices preferably in working condition, but I'm interested in any solutions.
Thank you for your help.
Interesting. There must be one out there somewhere waiting to be discovered.
Wayne Homren, Editor
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