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Password Strength Meter

1 post · Jan 2022

What this trail covers

PlanetScale implements an entropy-based password strength meter for its signup forms, moving away from rigid password rules to improve user experience and security. This system provides real-time feedback to users as they type, working well with password managers and offering a more user-friendly approach to strong password enforcement.

All PlanetScale trails
  1. Using entropy for user-friendly strong passwordsThis post details the implementation of an entropy-based password strength meter for PlanetScale's signup form. It explains the concept of password entropy, demonstrates its superiority over specific rule-based validation, and outlines the technical approach using Ruby on Rails, the `strong_password` gem, and the `auto-check-element` web component. The post includes code snippets for the frontend form and backend controller logic, as well as a visual representation of the password meter.