Credit Card Codes

It is always good to be on the safe side when sending credit card information through the internet.

There are several easy techniques you can use to make it unrecognizable, by putting the numbers in a code.  It does not have to be NSA-proof, but will foil those scanning for credit card numbers.

Credit card numbers usually have 16 digits, but we can disrupt this pattern.

 

Credit Card Encryption Technique

Example using:
1234-5678-9012-3456 Exp. 12/10
1. Additional Characters - Adding a random letter of the alphabet to each 4 digit sequence with a random letter or punctuation.  The recipient simply ignores any non-number. 1234A-5678B-90%12C-34?56D Exp. 12E/10F
or
1A2B3C4D-5E6F7Hello8There-9How0Are1You2-3456
2. Backwards - enter the credit card number backwards 6543-2109-8765-4321  Exp. 21/01
3. Scramble 4 - Each 4 letter sequence is backwards 4321-8765-2109-6543  Exp: 0121
4. Telephone Cipher - substitute any of up to 3 letters from each number of a typical telephone key pad.  It does not matter which alphabetic letter you choose.

Note: We can use Z for Zero.  But there is no letter for the number 1.

1 =1
2 =A or B or C
3 =D or E or F
4 =G or H or I
5 =J or K or L
6 =M or N or O
7 =P or Q or R or S
8 =T or U or V
9 =W or X or Y
0 =Z or * or #

Example: 1ADG-JMPT-WZ1B-EHKN  Exp. 1C/1Z
5. StoreKeeper's Code - each number, such as an item's cost, becomes a letter of the alphabet.  There are 10 basic consonant sounds, each corresponding to a digit. Vowels are ignored.  The number-letter equivalents may vary in each shop.  Please use ours: 1 = L or l
2 = Dd or Tt
3 = Mm
4 = Ff or Vv
5 = Ss or Zz
6 = Jj, Sh, Ch, soft g
7 = Rr
8 = Kk or hard G
9 = Bb or Pp
0 = Nn
LTMF-SJRK-BNLD-MVZSH Exp. LD/LN

or with extra vowels (a,e,i,o,u,y)

LATEMIFO-SUJAREKI-BONULYD-MAVEZISH Exp. LD/LN

 

NOTE: If you use a code, please use extra care to ensure accuracy and consistency, so as not to delay the fulfillment of your order. Thank you.

Please send your ideas and suggestions to
Cryptology@CICorp.com