Passwords
What PTERI replaces in the password stack — stored credentials, recovery secrets, MFA add-ons — and why none of it is needed.
OTP & authenticator apps
Why time-based codes, shared seeds, and SMS delivery add no security value once intent is signed cryptographically.
Static API keys
Why long-lived API keys and stored service secrets become obsolete when every request carries a scoped cryptographic signature.
Custodial payments
How signed payment intent and UTXO settlement on Litecoin remove custody risk, reversal logic, and intermediary trust.
Smart-contract stacks
Why tokens, contract logic, and programmable on-chain state are unnecessary when cryptographic authority is the foundation.
Zero-trust policy systems
Why probabilistic policy engines and risk scoring give way to deterministic cryptographic authorization — and what PTERI leaves alone.