Project Identifier: OG-24-SEC
Obsidian Gate
Research Field: Non-Feedback Graphical Authentication
01. Research Abstract
Obsidian Gate is a research-grade platform for evaluating a non-feedback graphical password. Participants enrol a five-sample pattern on a 5×5 invisible canvas — no lines, no dots, no highlights — and log in by drawing it back into the dark.
†Sessions are recorded under informed consent. A seven-day recall prompt and a shoulder-surfing reproduction test are part of the protocol.
Scale: Raw
Fig. 1 — The canvas remains dark to prioritise kinetic recall over visual memory; no visual trace is left for an observer to copy.
03. Methodology
- 03.1
Enrolment
Five pattern samples are captured and fused into a stable template. Inter-sample similarity ≥ 85% is required.
- 03.2
Matching
Dynamic Time Warping, geometric shape vector, and coordinate similarity combine into one weighted score.
- 03.3
Memorability
A 7-day email prompt invites participants to log in unaided. Recall rate and time-to-success are recorded.
- 03.4
Shoulder-surfing
Observers replay a participant's session and attempt reproduction. Attack-success rate is the headline metric.
04. Measurements
| Axis | Recorded |
|---|---|
| Usability | Login time, success rate, attempts |
| Security | FAR, FRR, lockouts |
| Memorability | 7-day recall rate & time |
| Resistance | Observer attack-success rate |
Exports are SPSS-compatible CSV and a dissertation-ready PDF report.
05. Ethics & Consent
Enrolment requires explicit consent and a pre-test checklist confirming the participant understands the recall and observation steps. Withdrawal is permitted at any time; consent events are written to the audit trail.