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Touchscreen communication (ToSCom): Electro-Quasistatic body communication during touch sensing.
Arunashish Datta1, David Yang1, Shovan Maity2
1School of Electrical and Computer Engineering, Purdue University, West Lafayette, 47906, IN, USA.
Communications Engineering
|March 25, 2025
Summary
Researchers developed Touchscreen Communication (ToSCom), enabling high-speed data transfer directly through touchscreens. This innovation allows simultaneous touch sensing and data communication, enhancing human-machine interaction for various applications.
Area of Science:
- Human-Computer Interaction
- Communication Technology
- Electrical Engineering
Background:
- Touchscreens are primary interfaces for human-machine interaction but lack simultaneous data communication capabilities.
- Current touchscreens only detect touch input and location, limiting advanced functionalities.
- Enabling communication through touchscreens could revolutionize user experiences and data access.
Purpose of the Study:
- To propose and demonstrate a novel interface for simultaneous touch sensing and high-speed data communication through touchscreens.
- To leverage Electro-Quasistatic (EQS) field-based communication for enhanced touchscreen functionality.
- To explore the societal impact of augmenting touchscreens with communication capabilities.
Main Methods:
- Development of a low path loss channel across the touchscreen surface.
- Implementation of Touchscreen Communication (ToSCom) utilizing EQS field principles.
- Testing and validation of data transfer rates and bit-error rates.
Main Results:
- Achieved high-speed data communication exceeding 1 Mbps through the touchscreen.
- Demonstrated a data rate of 3 Mbps with an average bit-error-rate below 5 × 10-7.
- Successfully enabled simultaneous touch sensing and data transmission.
Conclusions:
- Touchscreen Communication (ToSCom) offers a viable method for high-speed data transfer integrated with touch sensing.
- This technology opens new possibilities for personalized user experiences, secure transactions, and efficient data exchange.
- ToSCom has the potential to significantly impact various applications, from wearable devices to public kiosks.
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