⭐ How CC checkers Work ⭐

Let's understand via simple example:

Warning: I'm not responsible for any illegal activity. This tutorial is only for educational purposes.

So first we gonna figure out odd position numbers.

4  6 3 0 5 3 0 9 

Now multiply those numbers with 2

8 12 6 0 10 6 0 18

Here we got two digit numbers we will do sum of that numbers.

8 3 6 0 1 6 0 9  (1)

Now find out numbers from even position,

0 0 2 3 1 4 6 1 (2)

Sum all numbers from (1) & (2)

8+3+6+0+1+6+0+9+0+0+2+3+1+4+6+1

= 50

If total sum is divided by 10 then card is Valid.