Image
EAN-139780571233335   EAN-13 barcode 9780571233335
Product NameCatch Me If You Can: The True Story of a Real Fake
LanguageEnglish
CategoryBook / Magazine / Publication
Short DescriptionHeight:7.64 inches / Length:0 inches / Weight:0.48 pounds / Width:4.96 inches
Amazon.comA Buy on Amazon ~ 0767905385
SKUM0571233333
Price New7.12 US Dollars    (curriencies)
Price Used0.25 US Dollars    (curriencies)
Width0.68 inches    (convert)
Height7.98 inches    (convert)
Length5.19 inches    (convert)
Weight8.48 ounces    (convert)
AuthorFrank W. Abagnale, Stan Redding
Page Count277
BindingPaperback
Published08/01/2000
FeaturesBroadway Books
Similar Items9780767925860: Stealing Your Life: The Ultimate Identity Theft Prevention Plan
9780767906838: The Art of the Steal: How to Recognize and Prevent Fraud--America's #1 Crime
9780739081044: Catch Me If You Can: Sheet Music From The Broadway Musical Piano/Vocal
9780553385441: Catching The Wolf Of Wall Street: More Incredible True Stories Of Fortunes, Schemes, Parties, And Prison
9780553384772: The Wolf Of Wall Street
9780552996631: Gump And Co
9780452298033: The Man In The Rockefeller Suit: The Astonishing Rise And Spectacular Fall Of A Serial Impostor
9780340953730: The Wolf Of Wall Street
9780202306087: The Public Realm: Exploring The City's Quintessential Social Territory (Communication And Social Order)
9780134305219: The Art Of The Steal: How To Protect Yourself And Your Business From Fraud, America's #1 Crime
9780099409991: The Big Con
0667068998221: Catch Me If You Can
0097361701844: Catch Me If You Can / The Terminal Double Feature
0097361474342: Catch Me If You Can
Created07-24-2013 12:11:03am
Modified10-03-2017 5:37:19am
MD5a6b46489ced5196b65202da989902ce0
SHA25684bb3592f8ad9d02ab6adbd932adb0a71ea22055986117037c0d5e020f095f06
Search Googleby EAN or by Title
Query Time0.0273139

Article of interest

Barcodes are a graphical representation of information that can be easily read by machines. People read text easy enough but machines find this to be too complex so we use barcodes to simplify the process.

Barcodes can store numbers, letters and all the special characters. What can be stored in the barcode depends on which type of barcode is being used. But the basics of how a barcode works is the same regardless of what type of code it is, what information is stored in the barcode or what type of scanner is being used.

barcode scanIt all starts with the scan. The scanner, regardless of which type you are using, will examine the barcode image. The lines (or blocks in the case of 2D barcodes) will either reflect or absorb light. When we look at the barcode, we tend to see the dark stripes and think of those as the important parts. Those are the parts that absorb the light and the white parts reflect the light. So the scanners tend to see the barcodes in reverse of how we think of them. But the dark and light portions of the code on their own don't automatically become the information stored in the code. In most cases, it is the relative placement and size of each dark and light stripe (or block) that make up the information. There are also special markers that help the scanner know which direction the barcode is facing when it is scanned. This allows the scanning process to work even if the barcode is upside down when it is scanned. The scanner simply processes the scanned data in reverse in this case.

barcode oscolloscopeTaking a look at an oscolloscope screen as a scanner passes over barcode, you can see that the stripes reflect back light and the scanner registers the changes as high and low levels. So what looks like a simple image is really a rather complex set of layered encryption to store the data. The encryption isn't done to hide the information in this case. Instead it is done to make it easy for the machine to read the information. Since the base language of machines is binary (1 and 0) it is easy for them to read this type of information even if it takes several steps to turn this back into something that people can understand.

binaryThe size of each high and low are combined to make binary data. A series of 1 (one) and 0 (zero) values which are strung together then decoded into the actual information. Up to this point, the process is the same for all barcodes regardless of how they are stored. Getting the lines or dots into binary is the easy part for the machine. The next step is to make this binary code into something useful to people. That step depends on  which type of barcode is being scanned. Each type of barcode has its own encoding methode. Just like human languages, what seems to be two similar words (or barcodes in this case) could actually be two very different values even though they have the same basic letters (or bars).

So you can see that the scanning devices need to know not only how to turn the bars or dots into binary, but after they have done that they need to know how to turn that binary string into the original information. But regardless of the encoding process the basic steps are the same. Process the light and dark areas, convert them to binary, decode the binary, pass the information on to the receiving device which is normally a computer program of some sort.

Once the decoded data reaches the computer program, there is no telling how the information is to be used. The grocery store will use the information to keep track of the products you purchased as you go through the register. A manufacturer will use the code to identify where they are storing their parts. And shipping companies use the codes to keep track of the packages they are delivering.

Now that you know a little about the mechanical portion of the process, take some time to learn about the different types of barcode scanners and the different ways the information can be encoded into barcodes.

Close

Search

Close

Share

Close

Dialog