Technical Breakdown

Security, quantified.

Why physical-key architecture is fundamentally more secure than software-only authenticator apps.

Vaultium

Other Apps

Security & Encryption

Where are the 2FA secrets stored?

Encrypted payload (Needs physical key)

Plaintext or app-isolated on phone

Hardware-backed Key Derivation

AES-GCM Authenticated Encryption

Zero network surface for keys

Physical Access Requirements

Physical key required to view codes

3-pass mutual hardware authentication

EV2 AuthenticateEV2First

HKDF UID-binding security layer

AES-CMAC device verification

Proximity requirement to unlock

NFC Contact (0-2cm)

None

Privacy & Recovery

Registration or user account needed

Vulnerable to Cloud/Sync breaches

Backup method

Airgapped secondary NFC card

Cloud sync or manual paper codes

What if the phone is stolen?

Codes remain 100% safe

High risk of complete compromise