Google Celebrates the patent Barcode invention by displaying "Barcode Logo" at Google Search Home Page, Barcode Logo to remark Barcodes 57th Anniversary at Google (www.google.com) as on 07th Oct, 2009.
On decoding "Barcode Logo" image it say's GOOGLE. 
Barcode Information Source WikipediaA
barcode is an optical
machine-readable representation of data. Originally, bar codes represented data in the widths (lines) and the spacings of parallel lines, and may be referred to as linear or 1D (1 dimensional) barcodes or symbologies.
They also come in patterns of squares, dots, hexagons and other geometric patterns within images termed 2D (2 dimensional) matrix codes or symbologies. Although 2D systems use symbols other than bars, they are generally referred to as barcodes as well.
The first use of barcodes was to label railroad cars, but they were not commercially successful until they were used to automate
supermarket checkout systems, a task in which they have become almost universal. Their use has spread to many other roles as well, tasks that are generically referred to as
Auto ID Data Capture (AIDC). Other systems are attempting to make inroads in the AIDC market, but the simplicity, universality and low cost of barcodes has limited the role of these other systems. It costs about half a United States cent (US$0.005) to implement a barcode compared to passive
RFID which still costs about $0.07 to $0.30 per tag.
[1] Barcodes can be read by
optical scanners called
barcode readers, or scanned from an image by special software. Scanning software for 2D codes is built-in to or available for many mobile phones, and is especially popular in
Japan,
India &
Europe.
Check out Google Search Home Page Logo's on previous occasions and get info on when Google has honored & displayed logos at their Search Home Page.
Cheer's
Afzal Khan
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