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February 22, 2026Open Access

“I found the text to be encouraging” - Evaluating Different Password Strength Calculator Designs

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Investigate the effectiveness of different password strength calculator designs on password choices and usability.
Created and evaluated six password strength calculator designs
Conducted an online survey with 89 participants
Assessed usability, emotional affect, password strength, and length
All designs improved password strength and length compared to control
Fear-appeal and positive-feedback nudges produced similar strength results
Positive-feedback nudges led to slightly longer passwords
Designs with guidance produced longer and stronger passwords, despite no significant differences

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Evaluates password strength calculators, finding that design impacts usability and password strength, suggesting improvements for security.

Doneva et al. (2026) studied this question.

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Evaluates password strength calculators, finding that design impacts usability and password strength, suggesting improvements for security.