Secure card and credential technology — the trust foundation for HID access.
Seos® is HID's most advanced secure identity technology, underpinning both physical cards and HID Mobile Access credentials. It uses strong cryptography and a flexible, device-independent data model so the same secure identity can live on a smart card, a key fob or a smartphone. Seos eliminates the security weaknesses of legacy 125kHz proximity cards and provides a future-proof foundation as organisations migrate to mobile-first access.
Strong AES-128 encryption and mutual authentication protect against cloning, replay and man-in-the-middle attacks.
The same Seos identity lives on a card, mobile or wearable — one credential standard for the entire estate.
The technology foundation for HID Mobile Access — one migration path from card to phone.
Seos is designed to evolve as credential technologies advance, protecting your investment long-term.
Upgrade from cloneable prox cards to cryptographically secure Seos credentials across the same readers.
Compatible with HID Signo and other Seos-capable readers already deployed.
Replace insecure 125kHz proximity cards with Seos for the same reader infrastructure — no forklift upgrade.
Issue Seos cards now and migrate to HID Mobile Access later — the credential format is the same.
Use Seos cards with multi-factor authentication for data centres, government facilities and secure labs.
Standardise on Seos across all sites for a consistent, secure credential estate.
| Type | Credential technology |
| Form factors | Cards, key fobs, mobile |
| Security | AES-128, mutual authentication |
| Integration | HID readers + iSecure |
| Partner tier | HID Gold Physical Access (OEM) |
Explore how Seos Credentials fits into the complete HID architecture.
All HID products →Talk to a HID specialist about Aero, Signo, Amico & Mobile Access.
