Choose from any of our gift cards to give to your loved ones
Luhn Algorithm Test Online: How to Validate CVV Codes
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 test, also known as the Luhn algorithm, is a simple checksum formula used to validate a variety of identification numbers, most notably credit card numbers.
Consider the credit card number: 4111111111111111. Starting from the rightmost side, we double every second digit: 4 1 1 1 1 1 1 1 1. This gives us: 8 2 2 2 2 2 2 2 1. Now, sum the digits of the doubled numbers: 8+2+2+2+2+2+2+2+1 = 20. Since 20 is divisible by 10, the credit card number is valid.
