The HID® OMNIKEY® 4121 Contactless ExpressCard™ Reader is designed to be left plugged into mobile devices; making it an efficient and secure solution for logging into laptops or notebooks. This reader is ideal for network logon, email encryption and many other contactless PKI-related applications . It is designed and suitable for every ExpressCard™ slot, and supports a wide range of 13.56 MHz contactless smart cards, including iCLASS®, MIFARE® and DESFire®. It leverages the existing OMNIKEY CL driver platform and Windows® plug and play driver support.