StarSign Token is a product family of Giesecke & Devrient containing smartcards, USB tokens with smartcard technology and software. StarSign has it's own PKCS11/CSP middleware, which is called SafeSign. The cards and tokens which are working with the middleware can have various operating systems such as STARCOS SPK2.3, SPK2.4, SPK2.5, STARCOS 3 and JavaCard based systems called SmartCafe Expert.

More about StarSign hardware based authentication can be found here.