Improving Password Memorability, While Not Inconveniencing the User
Woods, N., & Siponen, M. (2019). Improving Password Memorability, While Not Inconveniencing the User. International Journal of Human-Computer Studies, 128, 61-71. doi:10.1016/j.ijhcs.2019.02.003
Julkaistu sarjassa
International Journal of Human-Computer StudiesPäivämäärä
2019Tekijänoikeudet
© 2019 Elsevier Ltd.
Passwords are the most frequently used authentication mechanism. However, due to
increased password numbers, there has been an increase in insecure password behaviors (e.g.,
password reuse). Therefore, new and innovative ways are needed to increase password
memorability and security. Typically, users are asked to input their passwords once in order
to access the system, and twice to verify the password, when they create a new account. But
what if users were asked to input their passwords three or four times when they create new
accounts? In this study, three groups of participants were asked to verify their passwords
once (control group), twice, and three times (two experimental groups). Psychological
literature suggests that applying repetition in learning to the password process has significant
effects on password memorability. However, previous password research has found a tradeoff between password security and memorability, and more recently, user convenience. Our
results suggest that verifying passwords three times can increase password memorability
from 42% (verifying passwords just once as with current practices) to 70%. Even by
increasing the verification to just two times can increase password memorability by 17%.
However, we found that through increasing the number of verifications did not equate to a
decrease in user convenience. What this means is that small changes to the password
verification stage can have significant results on password memorability while not
necessarily inconveniencing the user. The implications of these results could ultimately have
a positive effect on password security, and the consequences of forgetting passwords.
...


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Academic PressISSN Hae Julkaisufoorumista
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