The certificate based ePass Public Key Infrastructure (PKI) tokens enable users to secure virtual communications and transactions with advanced digital signature and data encryption features.
| ePass | 3003 | 2003 | PKI | |
| Hardware | Processor | 32 bits | 16 bits | 32 bits |
| Protected memory | 64 KB | 64 KB | 64 KB | |
| Flash | 2 MB cdrom | 8 GB option | ||
| Interfaces | USB | HID | CCID PC/SC | CCID PC/SC |
| API | PKCS#11, CSP | PKCS#11, CSP, CNG | PKCS#11, CSP | |
| Applications | Web Authentication | X | X | X |
| e-mail, documents Signature | X | X | X | |
| e-mail, documents encryption | X | X | X | |
| EFS Files encryption | X | X | ||
| SSO, Smart card logon | X | X | ||
| VPN, IPSec, SSL | X | X | X | |
| Open SC | X | X | ||
| PKI Applications | X | X | X | |