What kid of rfid card is in here

Hello guys im new to all this and I like to begin a project to wich I can hack this rfid card and change values on it. but what kid of frequenties and type of rfid is used in a college card to pay drinks and stuff ? and if it is readable and writable with this: http://www.dealextreme.com/details.dx/sku.17730
thanks in advance

oh I case your wondering I do not want to use it to get free drinks. Just to show school its buggy. And maybe one free soda to serve as evidence ;)
btw im dutch so dont expect much of my english

Hallo,
you can ask for applyed frequency the producer/deliverer of your automat-oder?
K.

If the RFID protocol isn't MIFARE, it's most likely another ISO14443 (13.56 MHz proximity card) based standard.
Regarding MIFARE security, see http://en.wikipedia.org/wiki/Mifare.
Newer standards as Mifare Plus are however providing stronger cryptography.

Thanks for the fast reply's!

But my problem, identifying the chip because it is embedded in a card I cannot see the make and model of the chip. so im kinda stuck there.

Soory,
but you are writingwrote over freqouency & what kind of RFID is used in...
The working frequency can you measure_ you need a "measuring coil"/antenne or a GDO, if you have a little bit smaller amplitude on your generators output (in Sweep modus) at some Freyuency_maybe at 13.56MHz,(for cheap cards isnot real, that have 125 KHz selekted, but is real possible that their is not a standart freyuency in system..), than you have it, but for know; what kind a chip ics are used_you MUST SEE (or konw it from documentations) THE bar CHIP inside your card...
It is not a simple job_practically inpossible....
K.

Frequency selection is effectively restricted by RF regulations. Above 150 kHz and below UHF, there aren't license free
alternatives to 13.56 MHz in most countries. A 13.56 MHz card can be identified by it's resonance frequency at 15 - 25 MHz.
(It's off-tune to allow operation in a stack of cards). If it's a 13.56 MHz card, it can be most likely recognized by a
multi-standard (ISO14443/15693) reader.

Hi FvM,
If your password is not the same/knowed can you read some info?
(Much systems apply not the 14443 coding...)
K.

I used an Omnikey Cardman 5121 reader in a project. It gives some identification for any 13.56 MHz card. I'm not aware of
13.56 MHz smart cards not using part of the 14443 or 15693 protocol, although my project's scope was mainly ISO 14443.

Any ISO14443 card, also MIFARE, has to take part in the anti-collision protocol, so you'll get at least an ID and some card
type information, even if all data would be read protected.

We experimented with an TI Reader/Evaboard;
we didnt becom for "a system unknowed card" noting as answer, but I can not tell you such details...
K.

If you refer to TI multi-standard 13.56 MHz reader, it handles 14443 type A and B and 15693. But I don't know, if the application
kit software is able to do scan for all supported tag types automaticly. This feature can be rather expected for commercial readers.