InterviewLens — Private On-Device Delivery Coach

Overview: InterviewLens is a private, on-device nonverbal delivery coach that watches your practice interview, presentation, or difficult conversation the way a world-class coach would — tracking camera gaze, facial expressiveness, posture, gestures, self-touch, pace, pauses, and filler words — turning them into an evidence-backed Nonverbal Delivery Report with drills, while your video never leaves your browser.

The Problem: 92% of adults report anxiety about job interviews, and 61% of recruiters say candidates struggle with camera presence and eye contact. Decades of research confirm that nonverbal delivery strongly shapes interviewer impressions, yet existing AI tools upload private video to the cloud, use unscientific emotion/confidence scoring banned under the EU AI Act, and offer no actionable breakdown.

The Solution: InterviewLens provides objective behavioral coaching with zero cloud video upload. Landmark extraction runs on-device using MediaPipe, generating numeric signal streams. Only structured numbers and transcripts reach Gemini Flash for narrative synthesis. No emotion inference, no confidence score — only observable behaviors, self-reported tension correlation, and research-backed impression tendencies.

Key Capabilities:

• 100% On-Device Computer Vision: MediaPipe Face (478 landmarks + 52 blendshapes), Pose (33 landmarks), and Hand (21 landmarks) extract 30+ nonverbal behavioral signals in-browser via WebAssembly/WebGPU. Video frames never leave your local device.
• Behavior Over Emotion (EU AI Act Article 5(1)(f) Aligned): Strict compliance-by-design. Zero emotion or confidence scores; reports only observable physical movements, vocal dynamics, and user self-reported tension.
• Synchronized Behavioral Timeline: Correlates gaze consistency, head stability, posture shifts, self-touch episodes, gestures, speaking rate (WPM), and filler words directly against user-reported tension per interview question.
• STAR Structure & Content Fluency: Evaluates answer architecture (Situation, Task, Action, Result) alongside delivery dynamics and verbal specificity.
• Research-Backed Evidence Cards: Every coaching recommendation cites established communication research (E1–E7) with cultural context and normative benchmarks.
• 6 Interactive Targeted Drills: Muscle-memory exercises (Camera Anchor, Planned Pause, Pace Ladder, Quiet Hands, Landing Sentences, Listening Face) with real-time pass/fail guidance.
• Multilingual & RTL Support: Fully localized for English, Persian, Arabic, and 90+ transcription languages.

Business Benefits:

• Eliminates candidate interview anxiety through structured, objective, and private practice loops.
• Increases interview success rates and offer conversions by calibrating nonverbal presence and clarity.
• Enables privacy-first institutional deployment in universities, career centers, and bootcamps with zero video retention liability.
• Augments human executive coaches with rich behavioral timelines and targeted drills between live coaching sessions.

Use Cases:

• Job seekers rehearsing high-stakes video interviews with real-time behavioral diagnostics and camera-presence feedback.
• University career centers and bootcamps deploying compliant, learner-owned interview training without privacy liabilities.
• Executive and communication coaches assigning drills and reviewing synchronized delivery timelines with clients.
• International professionals practicing pacing, tone, and STAR answer structure for corporate interviews with culturally calibrated feedback.

Who It's For: Job seekers, university students, career changers, non-native speakers, executive coaches, university career centers, and corporate L&D teams.

How It Works:

1. Select your target role, seniority level, and interviewer style.
2. Complete a real-time camera and environment check.
3. Conduct a live AI mock interview turn or upload an existing recording.
4. Complete a quick post-session tension self-report.
5. Receive an evidence-labeled Nonverbal Delivery Report with 4 composite indices and prioritized practice drills in under 20 seconds.

Why This Application: InterviewLens is the only delivery coaching platform built from the ground up for the EU AI Act era. Unlike legacy platforms that upload sensitive video to remote clouds and generate arbitrary confidence scores, InterviewLens guarantees 100% on-device privacy, scientifically defensible nonverbal behavioral analysis, and transparent, actionable coaching.