Posts

Showing posts with the label Credit cards domain

Featured Post

15 Python Tips : How to Write Code Effectively

Image
 Here are some Python tips to keep in mind that will help you write clean, efficient, and bug-free code.     Python Tips for Effective Coding 1. Code Readability and PEP 8  Always aim for clean and readable code by following PEP 8 guidelines.  Use meaningful variable names, avoid excessively long lines (stick to 79 characters), and organize imports properly. 2. Use List Comprehensions List comprehensions are concise and often faster than regular for-loops. Example: squares = [x**2 for x in range(10)] instead of creating an empty list and appending each square value. 3. Take Advantage of Python’s Built-in Libraries  Libraries like itertools, collections, math, and datetime provide powerful functions and data structures that can simplify your code.   For example, collections.Counter can quickly count elements in a list, and itertools.chain can flatten nested lists. 4. Use enumerate Instead of Range     When you need both the index ...

Tokenization: Vault based Vs Vault-less

Image
Tokenization means generating a random number as an alternative for a Credit card (PAN) number. The random number can be Numeric/Non-numeric. It is in such a format that others cannot decode it.    *** The popular tokenization server is the Vault server. It generates a random Token for each transaction customer made at Merchant outlets. You can find how card numbers are masked with junk characters in the pdf provided. Here is the  Visa Security Tokenization Pdf. Two Top Tokenization Servers. Vault based server Vault-less server What is Tokenization? 1. Vault based server It stores a  Card number (PAN) and a Token  in a Table of the Teradata database as Key and value pairs. Due to the growing volume of transactions, the handling of the database became a big challenge for acquirers.  For each transaction, the vault server stores a record. That row contains both the Credit card number and its Token. When you use the same card multiple times, it gener...

Payment Cards Complete List

Image
In this post, I have shared top payment cards, which are alternatives to money. The list is Credit, Debit, Fleet, Co-branded, Contactless cards.   Types of Plastic cards Many plastic cards are present to carry out financial transactions. The purpose is to buy items within the limit prescribed by banks to the cardholder. Two types of cards in this category are Magnetic-stripe and Chip cards. Credit cards In today's world, all banks issue credit cards with CHIP and PIN. After entering the PIN by the cardholder, the transaction kicks in for further processing. Types of Credit cards Security deposited cards: The cardholder should pay some front money to get this type of card. When the cardholder goes unpaid, then the card issuer pay from it. Credit Union Cards : The private Credit Union owners issue these cards. They usually charge less than what banks will. Pre-paid cards: They technically equal to Debit cards. They pre-loaded with a certain amount. You can use the cards unt...