Let's Talk: Which Way to Pay? | Gulf Coast Bank & Trust

Admin
October 1, 2024

We’ve all had the experience of getting to the check-out counter, taking out our debit or credit card, and being unsure of how the card reader wants us to pay. What’s the difference between swiping a card, inserting the chip, and paying with your phone? Which option is the most secure?

Swiping Your Card

Your card has a magnetic strip along the back that stores your card information, much in the same way that a cassette tape stores music. The strip contains a bunch of miniscule magnets that can each either point up or down, and these patterns store your credit card information so it can be read by scanners.

The magnetic strip on your card is less secure than most other ways to pay. Because magnetic strips are an old, common storage medium, it is relatively cheap and easy for fraudsters to create “skimmers”, devices designed to read the information on your card’s magnetic strip.

Fraudsters usually plant skimmers at ATMs and self-service gas pumps, placed over the real card insert slot. This lets them read the magnetic strip data as your card is inserted into and removed from the slot. However, handheld skimmers also exist, letting fraudsters read and store your card information if they get ahold of your card.

A credit card skimmer that has been removed from a gas pump payment terminal

Above: a card skimmer that has been placed over a gas pump card slot.

Inserting the Chip

If the magnetic strip on your card is like a cassette tape, the chip is more like a USB drive. The chip stores the same information as the magnetic strip, but it is stored digitally and encrypted. Reading the chip requires a specific interface only used for card chips, making it more secure than a magnetic strip.

However, that extra security comes at a cost. Chip-enabled terminals can be expensive, costing over a thousand dollars, so not all stores will support chip payments.

Extra Steps

Some cards with chips are “chip-and-signature” cards, meaning they require you to both insert your chip and sign at the terminal. Requiring a signature won’t stop fraudsters from completing the transaction, since you sign after the transaction is approved, but they increase security by making it easier to for financial institutions to identify which transactions weren’t made by you.

Other cards are “chip-and-pin” cards, requiring you to insert your chip and enter a 4-digit PIN. The pin must be entered for the transaction to be approved, adding an extra layer of security.

Digital Wallets

But what if you don’t even need your card with you? Digital wallets are the newest arrival when it comes to card payments, and they offer more security than the other options discussed previously.

Unlike both the magnetic strip and the chip on your card, a digital wallet doesn’t store or transmit your card information directly. Instead, the digital wallet transmits a one-time-use “token” to both the card reader and your provider, which is used to process the payment – the vendor never receives your actual card information.

A Gulf Coast Bank card being used to pay from a digital wallet

However, digital wallets are not a perfect solution, and they’re still only as secure as your phone is. If you use a digital wallet, be sure to keep your phone secured with both a password and biometric technology (fingerprint, face scanning). They are also the least widely available payment method, so you may still need to carry your cards with you.

No payment method is perfectly secure, but it’s important to know the advantages and disadvantages of each. If you suspect that your card has been compromised or used fraudulently, please immediately call Card Services at
504-565-4640
.

Gulf Coast Bank & Trust Company is committed to being the bank that cares about you. If you have any topics that you would like us to discuss, we invite you to email them to marketing@gulfbank.com with the subject line “Let’s Talk!”