Tracking Keystrokes Using Wireless Signals. Chen, B., Yenamandra, V., & Srinivasan, K. In Proceedings of the 13th Annual International Conference on Mobile Systems, Applications, and Services, of MobiSys '15, pages 31-44, 2015. ACM. ![Tracking Keystrokes Using Wireless Signals [link]](https://bibbase.org/img/filetypes/link.svg "link")
Website abstract bibtex We implement a passive remote keystroke detection mechanism using only changes in the wireless channel. The detection algorithm does not require the user to wear any active devices nor does it require a change in the user's wireless transmission technique. The receiver system is implemented with five antennas. We cancel the signals received on multiple antennas. The key insight to realizing a fine-grained localization system is to exploit the extremely high sensitivity of cancellation performance (interference cancellation in full-duplex for example) to exact amplitude and phase matching. The receiver design introduces a delay mismatch between the received signal streams to guarantee imperfect cancellation across the transmission bandwidth except at one in-band frequency resulting in a trough in the cancellation spectrum. We detect keystrokes by forming an array of observed trough frequency across different antenna pairs. We implement our receiver system on the NI-based SDR platform. With full-training the receiver detects a keystroke within one key offset with an accuracy of 91.8%. With a short ≈ 10 character training input, this accuracy drops to 85%.
@inProceedings{
title = {Tracking Keystrokes Using Wireless Signals},
type = {inProceedings},
year = {2015},
identifiers = {[object Object]},
keywords = {keystrokes,wireless},
pages = {31-44},
websites = {http://dx.doi.org/10.1145/2742647.2742673},
publisher = {ACM},
city = {New York, NY, USA},
series = {MobiSys '15},
id = {6da91093-c94c-3c0d-9cba-134d5dec1946},
created = {2018-07-12T21:30:57.610Z},
file_attached = {false},
profile_id = {f954d000-ce94-3da6-bd26-b983145a920f},
group_id = {b0b145a3-980e-3ad7-a16f-c93918c606ed},
last_modified = {2018-07-12T21:30:57.610Z},
read = {false},
starred = {false},
authored = {false},
confirmed = {true},
hidden = {false},
citation_key = {chen:wifikeystrokes},
source_type = {inproceedings},
private_publication = {false},
abstract = {We implement a passive remote keystroke detection mechanism using only changes in the wireless channel. The detection algorithm does not require the user to wear any active devices nor does it require a change in the user's wireless transmission technique. The receiver system is implemented with five antennas. We cancel the signals received on multiple antennas. The key insight to realizing a fine-grained localization system is to exploit the extremely high sensitivity of cancellation performance (interference cancellation in full-duplex for example) to exact amplitude and phase matching. The receiver design introduces a delay mismatch between the received signal streams to guarantee imperfect cancellation across the transmission bandwidth except at one in-band frequency resulting in a trough in the cancellation spectrum. We detect keystrokes by forming an array of observed trough frequency across different antenna pairs. We implement our receiver system on the NI-based SDR platform. With full-training the receiver detects a keystroke within one key offset with an accuracy of 91.8%. With a short ≈ 10 character training input, this accuracy drops to 85%.},
bibtype = {inProceedings},
author = {Chen, Bo and Yenamandra, Vivek and Srinivasan, Kannan},
booktitle = {Proceedings of the 13th Annual International Conference on Mobile Systems, Applications, and Services}
}
Downloads: 0
{"_id":"o3PJCB3uvXLTCJDzC","bibbaseid":"chen-yenamandra-srinivasan-trackingkeystrokesusingwirelesssignals-2015","downloads":0,"creationDate":"2016-02-09T06:00:29.943Z","title":"Tracking Keystrokes Using Wireless Signals","author_short":["Chen, B.","Yenamandra, V.","Srinivasan, K."],"year":2015,"bibtype":"inProceedings","biburl":null,"bibdata":{"title":"Tracking Keystrokes Using Wireless Signals","type":"inProceedings","year":"2015","identifiers":"[object Object]","keywords":"keystrokes,wireless","pages":"31-44","websites":"http://dx.doi.org/10.1145/2742647.2742673","publisher":"ACM","city":"New York, NY, USA","series":"MobiSys '15","id":"6da91093-c94c-3c0d-9cba-134d5dec1946","created":"2018-07-12T21:30:57.610Z","file_attached":false,"profile_id":"f954d000-ce94-3da6-bd26-b983145a920f","group_id":"b0b145a3-980e-3ad7-a16f-c93918c606ed","last_modified":"2018-07-12T21:30:57.610Z","read":false,"starred":false,"authored":false,"confirmed":"true","hidden":false,"citation_key":"chen:wifikeystrokes","source_type":"inproceedings","private_publication":false,"abstract":"We implement a passive remote keystroke detection mechanism using only changes in the wireless channel. The detection algorithm does not require the user to wear any active devices nor does it require a change in the user's wireless transmission technique. The receiver system is implemented with five antennas. We cancel the signals received on multiple antennas. The key insight to realizing a fine-grained localization system is to exploit the extremely high sensitivity of cancellation performance (interference cancellation in full-duplex for example) to exact amplitude and phase matching. The receiver design introduces a delay mismatch between the received signal streams to guarantee imperfect cancellation across the transmission bandwidth except at one in-band frequency resulting in a trough in the cancellation spectrum. We detect keystrokes by forming an array of observed trough frequency across different antenna pairs. We implement our receiver system on the NI-based SDR platform. With full-training the receiver detects a keystroke within one key offset with an accuracy of 91.8%. With a short ≈ 10 character training input, this accuracy drops to 85%.","bibtype":"inProceedings","author":"Chen, Bo and Yenamandra, Vivek and Srinivasan, Kannan","booktitle":"Proceedings of the 13th Annual International Conference on Mobile Systems, Applications, and Services","bibtex":"@inProceedings{\n title = {Tracking Keystrokes Using Wireless Signals},\n type = {inProceedings},\n year = {2015},\n identifiers = {[object Object]},\n keywords = {keystrokes,wireless},\n pages = {31-44},\n websites = {http://dx.doi.org/10.1145/2742647.2742673},\n publisher = {ACM},\n city = {New York, NY, USA},\n series = {MobiSys '15},\n id = {6da91093-c94c-3c0d-9cba-134d5dec1946},\n created = {2018-07-12T21:30:57.610Z},\n file_attached = {false},\n profile_id = {f954d000-ce94-3da6-bd26-b983145a920f},\n group_id = {b0b145a3-980e-3ad7-a16f-c93918c606ed},\n last_modified = {2018-07-12T21:30:57.610Z},\n read = {false},\n starred = {false},\n authored = {false},\n confirmed = {true},\n hidden = {false},\n citation_key = {chen:wifikeystrokes},\n source_type = {inproceedings},\n private_publication = {false},\n abstract = {We implement a passive remote keystroke detection mechanism using only changes in the wireless channel. The detection algorithm does not require the user to wear any active devices nor does it require a change in the user's wireless transmission technique. The receiver system is implemented with five antennas. We cancel the signals received on multiple antennas. The key insight to realizing a fine-grained localization system is to exploit the extremely high sensitivity of cancellation performance (interference cancellation in full-duplex for example) to exact amplitude and phase matching. The receiver design introduces a delay mismatch between the received signal streams to guarantee imperfect cancellation across the transmission bandwidth except at one in-band frequency resulting in a trough in the cancellation spectrum. We detect keystrokes by forming an array of observed trough frequency across different antenna pairs. We implement our receiver system on the NI-based SDR platform. With full-training the receiver detects a keystroke within one key offset with an accuracy of 91.8%. With a short ≈ 10 character training input, this accuracy drops to 85%.},\n bibtype = {inProceedings},\n author = {Chen, Bo and Yenamandra, Vivek and Srinivasan, Kannan},\n booktitle = {Proceedings of the 13th Annual International Conference on Mobile Systems, Applications, and Services}\n}","author_short":["Chen, B.","Yenamandra, V.","Srinivasan, K."],"urls":{"Website":"http://dx.doi.org/10.1145/2742647.2742673"},"bibbaseid":"chen-yenamandra-srinivasan-trackingkeystrokesusingwirelesssignals-2015","role":"author","keyword":["keystrokes","wireless"],"downloads":0},"search_terms":["tracking","keystrokes","using","wireless","signals","chen","yenamandra","srinivasan"],"keywords":["dblp","keystrokes","wireless"],"authorIDs":[]}