magnetic stripes

Why Do Credit Cards Have Magnetic Stripe On The Back?

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Why Do Credit Cards Have Magnetic Stripe On The Back? A stripe on the back contains the data embedded in iron particles in plastic film. An electronic reader is swiped through a slot. The reader decodes the embedded data and approves (or denies) the transaction or access that is being attempted. What does the magnetic

What Do Magnetic Anomalies Prove?

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What Do Magnetic Anomalies Prove? Magnetic anomaly maps are widely used in the geological sciences and in natural resource exploration. Such maps can provide insights into the subsurface composition of the Earth’s crust, including the detection of structures hidden by overlying geologic features, such as thick sedimentary layers. What does magnetic striping prove? During times