How to Swipe Cards: The Proper Technique
Learn the definitive method for swiping magnetic stripe cards. Achieve reliable transactions and avoid common reading frustrations.
Swiping a card is a common action in various transactions, primarily involving magnetic stripe cards. These cards have been a prevalent technology for decades, used for retail purchases and hotel room entry. Understanding the proper technique and underlying principles helps ensure smooth and successful interactions.
Magnetic Stripe Technology
A magnetic stripe card features a dark band on its back, made of tiny magnetic particles. This stripe stores digital information, encoded by magnetizing these particles in specific directions.
The magnetic stripe contains three distinct tracks. Track one stores alphanumeric characters like the cardholder’s name, account number, and expiration date. Track two holds numeric data, such as the account number and service information. A third track exists but is less frequently used for standard payment cards.
When the card moves through a reader, magnetic variations on the stripe induce a voltage. This voltage is amplified and interpreted by the reader’s processor, which decodes the information to authenticate the card or transaction.
Performing the Swipe
Successfully swiping a magnetic stripe card requires a consistent motion. Hold the card firmly, ensuring the magnetic stripe faces the card reader’s read head. Most readers indicate the correct orientation; a common practice is to hold the card with the stripe facing inward towards the machine.
Execute the swipe in a smooth, single motion through the reader’s slot. The speed is important; use a moderate, steady pace to help the reader accurately capture all data. Maintaining continuous contact between the stripe and the reader’s head throughout the motion is necessary for a complete read. Hesitation or jerky movements can result in an incomplete data transfer, leading to a declined transaction or access error.
Troubleshooting Swipes
When a magnetic stripe card fails to read, an incomplete or improper swipe is a frequent cause. Re-attempting the swipe with a more deliberate, consistent movement, possibly varying the speed, can often resolve the issue.
The magnetic stripe can also become dirty or damaged over time, leading to read errors. Scratches, grime, or wear can obscure data. Exposure to strong magnetic fields, such as from wallet clasps or security tag de-activators, can demagnetize the stripe. To clean a dirty stripe, gently wipe the card with a soft, damp cloth or a mild cleaning solution on a cotton ball. A pencil eraser can also be used carefully for minor buildup.
Maintaining the card’s integrity is important for consistent performance. Store cards in a wallet or cardholder to prevent scratches. Avoid storing two cards with their magnetic stripes touching, as this can lead to demagnetization. If cleaning and proper swiping do not resolve the issue, the card may be permanently damaged or the reader faulty. Contacting the card issuer for a replacement is the next step.