Tags
Credit Card, Credit Card Number, Hans Peter Luhn, IMEI number, Java Luhn, Java Luhn Implementation, Luhn, Luhn Algorithm, Test Credit Card, Test IMEI
Some people ask me about how banks or online retailer know when their credit card number is wrong without a regular request or how their mobile services provider or mobile apps know their smartphone or tablet identification(IMEI) are invalid due to initial system configuration manipulation.
What if I tell you the similarity between this identifications and the java code behind the scene?
It sounds really cool, yeah?
I think that one of best coding practices I have learned over time which can help improve the quality of software is the defensive programming; consequently, I share this link with you in order to explain what I’m refer to.
Jorge Code 