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true	true	About	/views/other/about	BannerBrand MdContent	bgImage title description tagline buttons socialLinks /bg.svg PowerPhone Unleashing the Acoustic Sensing Capability of Smartphones ACM MobiCom 2023 Paper "PowerPhone: Unleashing the Acoustic Sensing Capability of Smartphones" text link Get Started /docs/quickStart text link Cite /#citation text link type Paper /2023ACM_Mobicom_PowerPhone.pdf plain text link type DOI https://doi.org/10.1145/3570361.3613270 plain icon link LogoGithub https://github.com/PowerPhone/PowerPhone

Features

PowerPhone reconfigures selected Android smartphones to support high-sampling-rate recording and playing on their built-in microphones and speakers. Such high sampling rates bring many benefits to acoustic sensing. Specifically:

• Finer Resolution: We improved the resolution of the acoustic sensing on smartphones using single microphone to 1cm.
• Finer Granularity: We push the sensing granularity of subtle movements to 2μm and show the feasibility of turning the smartphone into a micrometer-level machine vibration meter.
• Longer Range: We increase the sensing range to 6m and showcase room-scale human presence detection using a smartphone.
• More Applications: With much higher Nyquist frequency (i.e. 96kHz), PowerPhone can enable many new applications that were previously infeasible.

Steps

1. Have a supported smartphone.
2. Unlock bootloader.
3. Flash recovery image.
4. Flash system image.
5. You're ready to go!

Authors

Shirui Cao* - PhD Student, CICS, University of Massachusetts Amherst

Dong Li* - PhD Candidate, CICS, University of Massachusetts Amherst

Sunghoon Ivan Lee† - Principal Investigator, CICS, University of Massachusetts Amherst

Jie Xiong† - Principal Investigator, CICS, University of Massachusetts Amherst

* Equal contribution. † Co-corresponding authors.

Citation

If you use this project or its artifacts in your research, please cite: :::: code-group ::: code-group-item LaTex

@inproceedings{10.1145/3570361.3613270,
author = {Cao, Shirui and Li, Dong and Lee, Sunghoon Ivan and Xiong, Jie},
title = {PowerPhone: Unleashing the Acoustic Sensing Capability of Smartphones},
year = {2023},
isbn = {9781450399906},
url = {https://doi.org/10.1145/3570361.3613270},
doi = {10.1145/3570361.3613270},
booktitle = {Proceedings of the 29th Annual International Conference on Mobile Computing and Networking},
articleno = {56},
numpages = {16},
location = {Madrid, Spain},
series = {ACM MobiCom '23}
}

::: ::: code-group-item ACM Ref

Shirui Cao, Dong Li, Sunghoon Ivan Lee, and Jie Xiong. 2023. PowerPhone: 
Unleashing the Acoustic Sensing Capability of Smartphones. In Proceedings 
of the 29th Annual International Conference on Mobile Computing and 
Networking (ACM MobiCom '23). Association for Computing Machinery, New 
York, NY, USA, Article 56, 1–16. https://doi.org/10.1145/3570361.3613270

::: ::::

License

Unless otherwise restricted, all source codes, code snippets and source files are released under MIT License. Unless otherwise restricted, all documents, instructions, videos, images, and other contents are released under Creative Commons CC BY 4.0 License.

Please note that the Linux driver codes are under GPL license, and the published paper is copyright owned by ACM.

Terms

Disclaimer

Our system images are specifically built for acoustic sensing research and are outdated without necessary security updates. Never use it on your daily-used smartphone.

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