Magnetic stripe card quality control and forgery investigation
Real time imaging of barcode information on magnetic stripe cards for quality control and forensic investigation
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A magnetic stripe card is a type of card capable of storing data by modifying the magnetism of iron-based magnetic micro particles on a band of magnetic material on the card. The magnetic stripe, sometimes called swipe card or magstripe, is read by physical contact and swiping past a magnetic reading head. In order to identify the magnetization quality of the magnetic structures, magneto-optical sensor systems, as the cmos-magview are the first choice for a quick and reliable 100% quality control. Due to significant marks even remagnetizations, frauding and other kinds of manipulations can be investigated within seconds.
Image right: Magneto-optical image of the magnetic code stored on a standard 2 track credit card. For quality control of geometrical information (top-left side) as well as amplitudes of magnetization intensities (top-right side) which are both functional relevant elements. Visualization and analysis can be performed in realtime by cmos-magview or hendheld magview (without software post processing).
Image right: Magnetic stripe card information of worn out card - defects are clearly detectable in visualization mode.
Image right: Magnetic stripe card with demagnetized area - the extinguished information is to be recognised only quite weakly in the middle of the image.
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