Toward privacy in IoT mobile devices for activity recognition

Théo Jourdan, Antoine Boutet, Carole Frindel

研究成果: Conference contribution

10 被引用数 (Scopus)

抄録

Recent advances in wireless sensors for personal healthcare allow to recognise human real-time activities with mobile devices. While the analysis of those datastream can have many benefits from a health point of view, it can also lead to privacy threats by exposing highly sensitive information. In this paper, we propose a privacy-preserving framework for activity recognition. This framework relies on a machine learning technique to efficiently recognise the user activity pattern, useful for personal healthcare monitoring, while limiting the risk of re-identification of users from biometric patterns that characterizes each individual. To achieve that, we first deeply analysed different features extraction schemes in both temporal and frequency domain. We show that features in temporal domain are useful to discriminate user activity while features in frequency domain lead to distinguish the user identity. On the basis of this observation, we second design a novel protection mechanism that processes the raw signal on the user's smartphone and transfers to the application server only the relevant features unlinked to the identity of users. In addition, a generalisation-based approach is also applied on features in frequency domain before to be transmitted to the server in order to limit the risk of re-identification. We extensively evaluate our framework with a reference dataset: results show an accurate activity recognition (87%) while limiting the re-identifation rate (33%). This represents a slightly decrease of utility (9%) against a large privacy improvement (53%) compared to state-of-the-art baselines.

本文言語English
ホスト出版物のタイトルProceedings of the 15th EAI International Conference on Mobile and Ubiquitous Systems
ホスト出版物のサブタイトルComputing, Networking and Services, Mobiquitous 2018
出版社Association for Computing Machinery
ページ155-165
ページ数11
ISBN(電子版)9781450360937
DOI
出版ステータスPublished - 2018 11月 5
外部発表はい
イベント15th EAI International Conference on Mobile and Ubiquitous Systems: Computing, Networking and Services, Mobiquitous 2018 - New York, United States
継続期間: 2018 11月 52018 11月 7

出版物シリーズ

名前ACM International Conference Proceeding Series

Conference

Conference15th EAI International Conference on Mobile and Ubiquitous Systems: Computing, Networking and Services, Mobiquitous 2018
国/地域United States
CityNew York
Period18/11/518/11/7

ASJC Scopus subject areas

  • ソフトウェア
  • 人間とコンピュータの相互作用
  • コンピュータ ビジョンおよびパターン認識
  • コンピュータ ネットワークおよび通信

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