Member Avatar for xueyingkoo

hello All,
i have no idea where should i post this question ...
This is my Operating system assingnment . Can any one give me some example ?

"In academic literature or the Internet, research the use of graphics to replace typed passwords.
Describe the historical milestones of the technology and the advantages and disadvantages of the
technology. Finally find one real world applications that use this technology, citing your sources "
Thank you ..
Grace be with you ...
xy

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asked for examples and sources; called it impossible. The topic is well documented and workable. Graphical passwords replace typed secrets with images, clicks, or drawn patterns and are usually split into three families: recognition-based (pick familiar images), recall-based (draw a shape or reproduce click points), and cued-recall (click points on a picture). Key milestones noted in surveys include Blonder's early click-region idea, the formal analyses in the late 1990s, and mid-2000s work (PassPoints) that exposed the "hotspot" problem where users concentrate clicks on predictable areas — see Graphical password.

Advantages and disadvantages to highlight in the assignment: advantages include improved memorability for many users and natural fit for touch screens; disadvantages include lower effective entropy (predictable choices/hotspots), vulnerability to observation or smudge attacks, and accessibility issues for visually impaired users. Typical mitigations to describe: increase image pools, enforce entropy-aware selection, add tolerance/randomization, or combine graphical schemes with PINs or 2FA.

A concise real-world example to cite is Android's pattern lock (a recall-based scheme). Use the Android pattern lock deployment as the case study: describe how it works, summarize published security/usability findings linked from the graphical-password survey, and draw conclusions about when graphical passwords are appropriate versus when traditional PINs/passwords or multi-factor solutions are safer. See for a starting reference and follow its citations to the original papers for primary sources.

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Member Avatar for Rashakil Fol

Finally find one real world applications that use this technology,

You've received an impossible assignment.

Member Avatar for xueyingkoo

You've received an impossible assignment.

why you say is impossible , can tell me more ,please ?
Thank a lot ...

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