Woodland/ Silver

The first way to identify products was through punch cards. These were first introduced during the great depression, but failed soon after due to the high cost and extra manual labor. This was the case until Norman Joseph Woodland and Bernard Silver first introduced the UPC Coding. The first UPC Bar Code was first introduced as a “bulls eye code”. It was a series of rings of different thicknesses that were printed with infrared ink. On October 20, 1949 they patented the bulls eye code, but this time it could be scanned with regular light and from multiple directions.
The UPC Bar Codes were a value to the sales, transportation, airlines, trade, and everywhere in-between. The bar codes were first invented in 1949, but were not in full use until the 1960’s. Silver was a graduate of Drexel Institute of Technology and Woodland who was working for Drexel, who decided to move into his parents place in Florida to further work on the UPC Bar Coding.

Bar Code
http://en.wikipedia.org/wiki/File:UPC-A-036000291452.png

Silver
Not Found

Woodland
http://www.moah.org/exhibits/archives/brains/images/woodland.jpg