PhoneFactor.com

PhoneFactor, Inc provides secure two-factor authentication services to leading companies worldwide. PhoneFactor's multifactor out-of-band authentication software is a cost effective, user friendly alternative to tokens, security fobs, certificates, and other 2 factor authentication methods.
Secure User Authentication including: SSL VPN Authentication | Citrix Authentication | Web Authentication | Terminal Services Authentication | OWA Authentication
Two-Factor Authentication for Regulatory Compliance: Payment Card Industry Data Security Standards(PCI DSS) Compliance | FFIEC Compliance | HIPAA Compliance
Compare Phone Authentication to: Security Tokens | SMS Authentication | Biometric Authentication