: The device uses an electromagnetic "write head" to polarize these particles in specific patterns, effectively "drawing" data onto the stripe.
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A magnetic stripe reader writer doesn't just "see" a card; it interacts with millions of tiny iron-based particles embedded in the stripe. : The device uses an electromagnetic "write head"
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: When a card is swiped, the "read head" detects changes in the magnetic field and converts those changes into electrical signals, which software then translates into ASCII text.