Credentials in information systems are widely used to control access to information or other resources. The classic combination of a user account number or name and a secret password is a widely-used example of IT credentials.

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A well-designed application has to have a good balance of various components: aesthetics, usability, security, and so on. Most web apps have measures employed to protect sensitive data, and a majority of those measures are related to information submission and account credentials. That said, this is one area where security and design decisions can easily clash with each other.