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Article History

Received: 10 November 2025

Accepted: 13 March 2026

First Online: 22 March 2026

Declarations

:

: The authors declare no competing interests.

: The data collection conducted in this study was performed solely for internal technical development and engineering validation of a radar-based activity recognition system within GoldSentintel Inc. The activities focused on hardware and software performance testing, feasibility analysis, and algorithm development, rather than biomedical, clinical, or human-subject research. All participants were company employees or founders who voluntarily took part in routine system evaluation activities conducted within the company environment. No patients, vulnerable populations, or external participants were involved. The procedures did not include any medical interventions, clinical assessments, or collection of biological material. Furthermore, no personally identifiable or sensitive personal data were collected or processed. The study was not conducted under the authority of a university or research institution subject to mandatory Research Ethics Board (REB) oversight. In accordance with the Tri-Council Policy Statement: Ethical Conduct for Research Involving Humans (TCPS 2) 53 , research ethics review is required for research involving human participants conducted under the auspices of eligible institutions. As the present work consisted of internal engineering development and did not constitute research involving human participants as defined under TCPS 2, formal REB approval was not required. Nevertheless, all participants were informed about the purpose and procedures of the data collection, and written informed consent was obtained from all individuals prior to participation. All procedures were carried out in accordance with relevant guidelines and regulations.