We manufacture both blank card, and pre-printed card.  

Atmel T5577 (update version which downward compatible with T5557, T5567). This 125KHz read/write RFID from Atmel is very mature and widely used technology. The cards have 363-bit EEPROM (11 blocks, 32bits each+1 lock bit).   
  
The Atmel T5577 proximity card is great solution for hotel key lock, access control, time attendance system.  
  
About Atmel T5557 IC :

-IC manufacturer : Atmel

-Wafer die : Atmel T5577

-Function : Read / Write protect by password

-Memory : 363-bit EEPROM (32bits each+1 lock bit)

-Frequency : 125KHz

-RF protocol : N/A

-Modulation : FSK, PSK, Manchester, Biphase, NRZ 

  
Key Feature of T5577 Card :  

-Dimensions : CR80 85.60 x 53.98mm

-Thickness : 0.84mm

-Material : PVC, PET

-Card Surface : Matte / gloss finish

-Housing : Lamination

-Working Frequency : 125KHz 

-Reading Distance : 3 - 10 cm typically

-Data storage time : 10 years 

Printing options

-Full color offset printing

-Silk-screen printing

-Silver/Gold silk-screen printing background

-Personalization 
 

Options for standart card

-Magnetic stripe: 300oe, 2750oe, 4000oe

-Numbering

-Barcode printing

-Signature panel

-Embossing

-Encoding (according agreement)

Application

-Access Control

-Hotel key Lock

-Time Tttendance System