Passwordless SaaS Login

How PTERI is applied in real systems.

Note

This section shows how PTERI’s single trust model is applied across different scenarios, without changing primitives or introducing special cases.

Each use case uses the same flow: Wallet → Signature → Verification → Outcome

---

Problem

Traditional SaaS login relies on:

• Passwords
• Email resets
• MFA add-ons

These increase friction and expand the attack surface.

PTERI Approach

• User requests login
• Backend issues a challenge
• Wallet signs the challenge
• Backend verifies and issues session/JWT

There are:

• No passwords to store
• No recovery emails
• No OTP codes

Login becomes a cryptographic proof of authority.

---

Next

QuickstartGet a key and run the challenge-and-verify loop yourself.→Authentication FlowThe full challenge, signature, and verification sequence.→