is there any kind of unique object that can differentiate smart cards from each other

I need to know if there any kind of un开发者_如何转开发ique object that i can use to differentiate between smart cards for example if i have 1000 smart cards and i need to differentiate between them without pre-write any values on them

is there any default unique value which is a factory default built-in value like the mac address for the network cards

????

how can i retrieve this value if it was there??

This depends on the type of smart card.

You won't be able to use the ATR, because this will be the same for each card. However, some smart cards support a "CHUID" (card holder unique ID), many MIFARE cards support this. However, sometimes the MIFARE card is configured to report a psuedo-random value for the card ID to eliminate the chances of someone tracking the card.

My company makes a web-browser based scripting environment for smart cards that will get you started, the paypass demo shows how to get the card ID for paypass cards:

https://cardboss.cometway.com/content.agent?page_name=Paypass+Demo