Case study

CustomWatch: a Prixton Life Fit companion from BLE protocol research

CustomWatch implements an Android companion for the Prixton Life Fit smartwatch using a BLE protocol studied through static analysis, limited capture and one-device tests. It requests activity, pulse and battery data, stores sleep observations locally, and forwards selected notifications.

Targets: Protocol
Category: Independent reconstruction cases
Relationship: Independent reconstruction project
Sources reviewed: 2026-11-06
Evidence class: C2 code & docs, no demo or download

Stars: 0
Last commit: 2026-10-30
Language: Java

GitHub data as of 2026-11-10

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Evidence

Observed: Code and documentation observed; no download method or demo found.
Checked: 2026-11-08

How evidence classes are assigned

Requirements & limits

Prerequisites: Android 8.0 or newer and a compatible Prixton Life Fit watch.
Prerequisites: Building requires JDK 17 or newer, Android SDK 35 and Gradle 8.9.
Limits: The author tested one watch; firmware compatibility and several health interpretations remain uncertain.
License: No licence file in the repository.

Cite

BibTeX

@misc{customwatch-case,
  title = {{CustomWatch: a Prixton Life Fit companion from BLE protocol research}},
  howpublished = {\url{https://github.com/kta41/CustomWatch}},
  url = {https://github.com/kta41/CustomWatch},
  urldate = {2026-11-06},
  note = {Awesome REA entry: \url{https://awesomerea.org/resources/customwatch-case/}}
}

Plain text

CustomWatch: a Prixton Life Fit companion from BLE protocol research. https://github.com/kta41/CustomWatch (accessed 2026-11-06). Awesome REA entry: https://awesomerea.org/resources/customwatch-case/

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About this entry

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Primary sources

README.md GitHub · kta41/CustomWatch · Revision 206f304
TECHNICAL_REFERENCE.es.md GitHub · kta41/CustomWatch · Revision 206f304