Commodity WiFi Sensing in 10 Years: Status, Challenges, and Opportunities

Sheng Tan, Yili Ren, Jie Yang, Yingying Chen

Research output: Contribution to journalArticlepeer-review

29 Scopus citations


The prevalence of WiFi devices and ubiquitous coverage of WiFi networks provide us the opportunity to extend WiFi capabilities beyond communication, particularly in sensing the physical environment. In this paper, we survey the evolution of WiFi sensing systems utilizing commodity devices over the past decade. It groups WiFi sensing systems into three main categories: activity recognition (large-scale and small-scale), object sensing, and localization. We highlight the milestone work in each category and the underline techniques they adopted. Next, this work presents the challenges faced by existing WiFi sensing systems. Lastly, we comprehensively discuss the future trending of commodity WiFi sensing.

Original languageEnglish (US)
JournalIEEE Internet of Things Journal
StateAccepted/In press - 2022

All Science Journal Classification (ASJC) codes

  • Signal Processing
  • Information Systems
  • Hardware and Architecture
  • Computer Science Applications
  • Computer Networks and Communications


  • Bandwidth
  • Internet of Things
  • OFDM
  • Sensors
  • WiFi
  • Wireless communication
  • Wireless fidelity
  • Wireless sensor networks
  • activity recognition
  • channel state information
  • localization
  • object sensing.
  • tracking


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