Wi-Fi Based User Identification Using In-Air Handwritten Signature

Junsik Jung, Han Cheol Moon, Jooyoung Kim, Donghyun Kim, Kar Ann Toh

Research output: Contribution to journalArticlepeer-review

3 Citations (Scopus)


This paper conducts a feasibility study regarding the use of the Wi-Fi channel state information for user recognition based on in-air handwritten signatures. A novel system for identity recognition is thus proposed to observe for distinctive signal distortions along the propagation path for different users. The system capitalizes on the vast availability of Wi-Fi signals for signal analysis without needing additional hardware infra-structure. Since the patterns of the raw Wi-Fi signals are sensitive to the signer's location, a transfer learning has been adopted to cope with the positional variation. Specifically, features trained at one position are transferred to classify signals collected at another position via a single shot retraining. A kernel and range space projection has been adopted for the single shot retraining. Our experiments show encouraging results for the proposed system.

Original languageEnglish
Article number9395433
Pages (from-to)53548-53565
Number of pages18
JournalIEEE Access
Publication statusPublished - 2021

Bibliographical note

Funding Information:
This work was supported by the National Research Foundation of Korea (NRF) through the Program of Basic Research Laboratory (BRL) under Grant NRF-2019R1A4A1025958.

Publisher Copyright:
© 2013 IEEE.

All Science Journal Classification (ASJC) codes

  • Engineering(all)
  • Materials Science(all)
  • Computer Science(all)


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