PassPoints: Design and longitudinal evaluation of a graphical password system

Wiedenbeck, Susan; Waters, Jim; Birget, Jean-Camille; Brodskiy, Alex; Memon, Nasir

doi:10.1016/j.ijhcs.2005.04.010

Cited by 516 publications

(425 citation statements)

References 29 publications

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“…A number of our results differ materially from previous usability studies [16][17] [18]. We found that participants were remarkably accurate in entering their passwords, indicating that tolerance regions as small as 9x9 pixels may be acceptable.…”

Section: Introductioncontrasting

confidence: 99%

“…Blonder's limitation of only allowing users to select from predefined objects within the image made the password space too small to be secure. Wiedenbeck et al [16][17] [18] subsequently proposed PassPoints, an alternative scheme allowing users to click anywhere on the given image.…”

Section: Introductionmentioning

confidence: 99%

“…Wiedenbeck et al [16][17] [18] conducted three user studies examining the effects of image choice and size of the tolerance region, and comparing PassPoints-style graphical passwords with text passwords. All three studies were conducted in-lab and consisted of having users create a password and practice until they entered it correctly ten times.…”

Section: Introductionmentioning

confidence: 99%

“…They returned one week later to log in again; in addition, for one study they also returned at the 6-week mark. The stated conclusion [18] was that despite the fact that graphical passwords are slower to enter than text passwords and users made more mistakes in the learning phase, both types of passwords are similarly memorable. From the second study [16], the stated conclusion was that while using a smaller tolerance square led to a larger password space, squares of 10x10 pixels were too small to be usable, with recommended tolerance regions of 14x14 pixels or larger.…”

Section: Introductionmentioning

confidence: 99%

See 3 more Smart Citations

A second look at the usability of click-based graphical passwords

Chiasson

Biddle

Oorschot

2007

Proceedings of the 3rd Symposium on Usable Privacy and Security

120

127

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Click-based graphical passwords, which involve clicking a set of user-selected points, have been proposed as a usable alternative to text passwords. We conducted two user studies: an initial lab study to revisit these usability claims, explore for the first time the impact on usability of a wide-range of images, and gather information about the points selected by users; and a large-scale field study to examine how click-based graphical passwords work in practice. No such prior field studies have been reported in the literature. We found significant differences in the usability results of the two studies, providing empirical evidence that relying solely on lab studies for security interfaces can be problematic. We also present a first look at whether interference from having multiple graphical passwords affects usability and whether more memorable passwords are necessarily weaker in terms of security.

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Section: Introductioncontrasting

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

A second look at the usability of click-based graphical passwords

Chiasson

Biddle

Oorschot

2007

Proceedings of the 3rd Symposium on Usable Privacy and Security

120

127

View full text Add to dashboard Cite

show abstract

“…Our results demonstrate that gaze-based password entry requires marginal additional time over using a keyboard, error rates are similar to those of using a keyboard and subjects preferred the gazebased password entry approach over traditional methods. [6] III.…”

Section: Literature Surveymentioning

confidence: 99%