Can I write some initial data on a EM4100 rfid card?
<p>I understand that the EM4100 cards contain only read-only data, and no new data can be written to it. So my question is: who writes the initial data? Is it like a cd (write once) or does it have some kind of id/code on it when you buy it?</p>

<p>Thanks!
Tekin.</p>