CardExchange Producer is capable of capturing and storing a Mifare DESFire’s card UID at the time of print. The card UID can be converted to decimal and hexadecimal with the help of Python scripting in the Card Designer.
Requires: CardExchange Producer v10 Business edition or higher
Step Process
To write a Python script that does the DESFire UID manipulation, please refer to the steps below:
Step 1:
Create a new MIFARE DESFire definition, according to your preferences.
Step 2:
Insert a Text box on the card.
Step 3:
A window will pop-up and you change the “Fixed Value” to “Script”.
Step 4:
After you change the “Fixed Value” to “Script” you define it as uid_var. Then another window will appear, it’s where you attribute the uid_var the value of UID. Then Press Ok.
Step 5:
Your Insert new object window should look as the image that follows and then you click on the arrow on the left side of varuid.
Step 6:
Select MIFARE DESFire UID.
Step 7:
Go to functions.
On the Functions tab insert the Python Script.
Example: Last 8 Numbers
uid = uid_var
str = str(uid)
x = len(str)
uid_var = str[x-8:x]
Code explanation:
uid = uid_var
str = str(uid)
sizeOfUid = len(str)
numberOfChars = 8
uid_var = str[sizeOfUid-numberOfChars:sizeOfUid]
Close the properties window, save the changes made and you should have the expected result.
Please let us know about your results.
Thank you.