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WhitepaperKTH Royal Institute of Technology3 Nov 2026

TonguePlay: Non-invasive Tongue Pressure Input for Gaming

Key insights

6 takeaways

01
Combining head-gaze for targeting with non-invasive tongue pressure for input significantly outperforms position-only tongue interfaces in ease of use, system response, and sense of control.See it on page 26
02
Physiological input variability, typically suppressed in interface design, can be leveraged as a 'texture' for game feel by mapping residual effort signals to in-game tension or animacy.See it on page 4
03
Tongue pressure input allows for hands-free interaction that avoids common XR issues like 'gorilla arm' fatigue and the 'Midas-touch' problem associated with gaze-only interfaces.See it on page 14
04
Users often exhibit 'whole-body recruitment'—stiffening the neck or arms—when using tongue pressure, but visual feedback of this overexertion can help players learn to isolate and modulate tongue effort.See it on page 19
05
The study establishes a design framework for embodied play that architecturally separates 'intent' (stable, discretized control) from 'texture' (residual, continuous variability) to enhance player agency.See it on page 23
06
Subjective ratings show that integrating head-gaze with pressure input is perceived as less mentally and physically demanding than using tongue position alone for 2D selection tasks.See it on page 11

Summary

TonguePlay: Non-invasive Tongue Pressure Input for Gaming POORIA GHAVAMIAN, KTH Royal Institute of Technology, Sweden NATALIA SEMPERE, KTH Royal Institute of Technology, Sweden ASREEN ROSTAMI, RISE Research Institutes of Sweden, Sweden and Stockholm University, Sweden MARTIN HEDLUND, KTH Royal Institute of Technology, Sweden XIAOYAN ZHOU, KTH Royal Institute of Technology, Sweden OSKAR HOKKANEN ERIKSSON, KTH Royal Institute of Technology, Sweden FLORIAN MÜLLER, TU Darmstadt, Germany ANDRII MATVI...

TonguePlay: Non-invasive Tongue Pressure Input for Gaming

TonguePlay: Non-invasive Tongue Pressure Input for Gaming

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