if it makes a difference it's a HID brand
if you break your own system, then you know where it is vulnerable. if you don't attack it yourself, some other person will do eventually. you want that person to be you.
It's very possible. What you need is something call proxmark3 and a tag capable of communicating as an HID prox. The tags that work at designated T5557, T5567, and T5577. Proxmark is similar to arduino as it has a very large community support forum. If your just looking for a copy of your key check out www.clonemykey.com
How am I doing for "not knowing what I'm talking about?"
I've been working with rfid for the past 3 years