Sensemitter is now Emhance.
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Emhance AI measures engagement through attention and activation, then applies memory science to understand what players actually retain. We turn these signals into clear, practical decisions that improve conversion, retention, and overall player experience.
What we study
Activation
Expression intensity as a nervous system proxy
Attention
Blink dynamics and visual focus signals
Memory
Peak + ending moments shape recall
Engagement classifications
Deep Focus
High attention, stable activation
Delighted
High activation, positive valence
Unengaged
Low attention, low activation
Frustration
High activation, negative valence
Neutral
Moderate attention, baseline activation
Angry
Extreme activation, negative spike
Executive summary
Objective engagement signals
Our goal is to assess engagement during playtests with objective, scalable measures. We track activation proxies from facial coding and attention proxies from blink dynamics, then map these states over time to identify the strongest and weakest moments in a session.
Automated facial coding
We use automated face analysis to estimate expression intensity. Strong facial configurations are used as a proxy for autonomic activation, particularly when aligned with gameplay events. We treat this as an intensity signal, not a literal classification of what the player “feels.”
Blink dynamics
We track blink rate and blink-free intervals as indicators of visual attention allocation. In visually demanding moments, players often suppress blinking to avoid missing information. We interpret blinks in context rather than as a universal meter.
Engagement vs boredom risk
We define “engagement” when activation and attention are both elevated. “Boredom risk” is the opposite: low intensity and low attention. Intermediate combinations help diagnose frustration, confusion, calm focus, or learning.
Peak–end rule
We apply the peak–end rule: retrospective evaluations overweight the most intense moment and how the session ends. We use timelines to locate the peak and ensure the final moments support the desired impression.