I was playing around with a few magnetic cards (parking lot tickets, time limited access etc) with my MSR605 reader. When the format is ISO, it is quite straigforward to extract clear data. When it is not, I don't understand how I can decode the data on the card. I can't neither understand how I can see what kind of encoding has been used.
For example, I have one ticket printed out on the 17th of December 2016 @ 18:01:22. the raw data on the track 3 of the card is:
D58F6A9C21856A2AD6DE722A2AD6DE72021084210C2A1587DA591B6A849975AA70861525ABEB06A283841B78
I have another ticket printed out on the 17th of December 2016 @ 18:03:21. the raw data on the card is:
D58F6A9C21856A2AD5C1ACEA2AD5C1ACC21084210C2A1587DA779C8B0742ADAA70861525ABE779DC5B782778
You can find redundancies... But it is impossible for me to find where the complete date/time is!
More generally, how do you know what kind of method is used to encoded data on a magnetic stripe?
Can you help me please to find the date/time on this magstripe and explain me how you did it?
Thanks!