iKey offers a compact hardware solution for
authentication and digital identity management. While offering similar
functionality to a smartcard, iKey packs two-factor authentication, encryption
key management, and digital signing functionality into a tiny, secure package
that includes an integrated USB port to eliminate the need for a separate reader
device.
USB Connectivity
iKey features a built-in USB connector for easy deployment of advanced authentication without the need to install additional smartcard readers or expensive biometric devices.Compact and Durable
The iKey personal USB authentication token is small enough
to fit on a keychain and its durable shell 
allows it to be carried at all times.
Two-Factor Authentication Eliminates Weak Passwords
Weak passwords create vulnerabilities by allowing
unauthorized access to sensitive networks. iKey offers true two-factor
(something you have and something you know) authentication that is secure and
easy to use.
Leading Integration and Application Support
iKey support is included in single sign-on/smartcard login,
VPN authentication, e-mail encryption, digital signatures, and many other
PKI-enabled applications from leading vendors like Microsoft, Entrust, Computer
Associates, VeriSign, and more.
Documents - Sentinel iKey 2032
Sentinel iKey 2032 Product Brief