Luhn Algorithm Test: How the Mod 10 Check Works
Run a Luhn algorithm test by hand: double every second digit from the right, sum the digits, and pass the number when the total divides by 10.
Redeem your gift cards at any of our Merchants
You can purchase a gift card from any of these locations
Onyx Gift Cards is a Grenadian company designed to introduce, market and manage gift cards systems in Grenada for retailers and corporations. We are enthusiastic about the effect and influence we will have on the local market. We intend to expand our systems regionally with a range of product offerings and services.
Gift cards are the preferred way of giving and receiving gifts. They carry a monetary value that can be redeemed for gifts at your favorite store.
Onyx GiftCards are “Open Gift Cards” which means that they can be redeemed at multiple merchant locations. They are standard credit card size, can fit into the average wallet and made of PVC plastic. Onyx GiftCards are Barcoded for security and safety for the consumer and bear a disclaimer at the back.
Onyx Giftcards can be bought with a branded Card backer which is black in colour and is designed to fit the card. There is an area to write a brief message to the recipient as well.
The Luhn algorithm, also known as the Luhn formula, is a simple checksum formula used to validate a variety of identification numbers, most notably credit card numbers. It is designed to protect against accidental errors, such as a mistyped digit, but not against intentional fraud.
The Luhn algorithm is an essential tool for any business that handles credit card transactions. It helps to reduce the risk of errors and fraud, ensuring that only valid credit card numbers are processed.
There are various online tools and software libraries available that can help you implement the Luhn algorithm in your application. For manual checks, you can follow the steps outlined above.