by Andreas Renz, Matthias Baldauf, Edith Maier, Florian Alt
Abstract:
Verifying the identify of the speaker is a crucial requirement for security-critical voice-based services on smart speakers, such as transferring money or making online purchases. Whilst various studies have explored novel authentication mechanisms for voice-based services, there is little research on the user experience of respective authentication methods. To address this gap, we conducted a comprehensive online survey (n=696). We compared five authentication methods (spoken PIN, biometrics, app with button/voice confirmation, card reader) regarding their perceived efficiency, security, ease of use, and error susceptibility. Additionally, we investigated users’ willingness to use security-critical services in banking and government. We found an overall preference to confirm actions triggered by voice by pressing a button on a mobile authentication app followed by PIN-based authentication. In contrast, biometric authentication by voice is considered unreliable, while applying a card reader is regarded secure, yet less convenient.
Reference:
A. Renz, M. Baldauf, E. Maier and F. Alt, "Alexa, It’s Me! An Online Survey on the User Experience of Smart Speaker Authentication", in Proceedings of Mensch Und Computer 2022, New York, NY, USA: Association for Computing Machinery, pp. 14–24.
Bibtex Entry:
@inproceedings{Renz22,
author = {Renz, Andreas and Baldauf, Matthias and Maier, Edith and Alt, Florian},
title = {Alexa, It’s Me! An Online Survey on the User Experience of Smart Speaker Authentication},
year = {2022},
isbn = {9781450396905},
publisher = {Association for Computing Machinery},
address = {New York, NY, USA},
url = {https://doi.org/10.1145/3543758.3543765},
doi = {10.1145/3543758.3543765},
abstract = {Verifying the identify of the speaker is a crucial requirement for security-critical voice-based services on smart speakers, such as transferring money or making online purchases. Whilst various studies have explored novel authentication mechanisms for voice-based services, there is little research on the user experience of respective authentication methods. To address this gap, we conducted a comprehensive online survey (n=696). We compared five authentication methods (spoken PIN, biometrics, app with button/voice confirmation, card reader) regarding their perceived efficiency, security, ease of use, and error susceptibility. Additionally, we investigated users’ willingness to use security-critical services in banking and government. We found an overall preference to confirm actions triggered by voice by pressing a button on a mobile authentication app followed by PIN-based authentication. In contrast, biometric authentication by voice is considered unreliable, while applying a card reader is regarded secure, yet less convenient.},
booktitle = {Proceedings of Mensch Und Computer 2022},
pages = {14–24},
numpages = {11},
keywords = {voice assistant, voice banking, authentication},
location = {Darmstadt, Germany},
series = {MuC '22}
}