Muster

Problem

Manual roll call burns instructional minutes and is easy to game. Muster prototypes camera-based check-in: enroll a reference face set, match live frames, and write attendance rows a teacher can audit.

What it covers

• Webcam capture pipeline with face detection pre-filter
• Embedding match against enrolled classroom roster
• React UI for session start, overrides, and audit export
• Confidence thresholds with manual fallback for ambiguous matches

export async function recordAttendance(sessionId: string, frame: ImageBitmap) {
  const faces = await detectFaces(frame);
  if (faces.length !== 1) return { status: 'ambiguous' as const };

  const match = await matchEmbedding(sessionId, faces[0].embedding);
  if (match.confidence < 0.82) return { status: 'low_confidence' as const };

  await db.attendance.insert({ sessionId, studentId: match.studentId, at: Date.now() });
  return { status: 'recorded' as const, studentId: match.studentId };
}