A barcode is a piece of Automatic Identification Technology (Auto ID) that stores real time data. It is a series of vertical bars or a graphical bar pattern which can, (depending on the width and pattern) encode numbers and letters in a format which can easily be retrieved and interpreted by a barcode reader
A machine-readable symbol composed of rows of encrypted data arranged in a rectangular or square pattern. The rows of data may be composed of barcode strips, form the two-dimensional block pattern or arranged as a checkerboard "matrix" of typically square elements.
Radio frequency identification
RFID is similar to bar code technology but uses radio waves to capture data from tags, rather than optically scanning the barcodes on a label. RFID does not require the tag or label to "in line of sight" to read - that's one of the key characteristics of an RFID system.
Optical Character Recognition - OCR
This is using a machine vision system or smart camera to capture an image and decode the required text, 1D barcode or 2D barcode in order to be used by automated system.
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1D Barcodes
2D Barcodes
RFID
