Authentication through coherence. The system doesn't ask who you are. It asks: are you present?
Traditional authentication asks what you know (passwords) or what you have (tokens). SPI asks how you are—right now. It measures the real-time coherence between your breath, heart rate, skin response, and a crystalline resonance anchor. When these signals align above your personalized threshold, presence is affirmed. No credentials stored. No biometrics saved. Only the living moment, witnessed and released.
Where w = weight, q = signal quality, s = normalized signal value.
Access granted only when coherence meets your adaptive threshold.
The threshold Tuser(t) evolves via Bayesian learning—adapting to your natural rhythms, environmental conditions, and stress patterns while maintaining security.
Crystalline oscillator tuned to your biofield. The root of presence. Frequency shift indicates live coupling.
The rhythm of will. Computed as root-mean-square of successive R-R interval differences. Cannot be faked under pressure.
The anchor of time. Piezo-detected thoracic movement. Breath-heart coherence R≥0.8 required for gate passage.
The empathy vector. Skin conductance reveals arousal state. Spikes indicate stress—or coercion.
The field signature. Your bioelectric presence mapped across differential capacitance channels. Spatial proof of embodiment.
Mission-critical devices unlock only when breath is true. Tools respond to embodied touch—not mimicry.
No ID. No storage. Just presence—locally sensed. The body speaks for itself.
Sacred data stores that open only to sustained coherence. Eight seconds of aligned presence reveals what speed cannot.
Operator coherence continuously monitored. If fatigue rises, access pauses. Protection through presence.
Offline asset release through biometric coherence. No passwords. No keys. Only the body, aligned in breath.
Shared access requiring synchronized presence from multiple users. The gate opens only when the group breathes together.
| Metric | SPI | Password | FaceID | NFC Token |
|---|---|---|---|---|
| Cloneable | No | Yes | Yes* | Yes |
| Fully Offline | Yes | Yes | No | Partial |
| Privacy Risk | Low | High | High | Medium |
| Continuous Auth | Optional | No | No | No |
| Biometric Storage | None | None | Required | Minimal |
| Replay Resistant | High | Low | Medium | Low |
| Liveness Detection | Yes (λ) | No | Partial | No |
* FaceID vulnerable to deepfakes and presentation attacks