Make Your Input Systems Case-Insensitive

Lots of systems are case-insensitive by default—that is, they don’t care if characters are UPPERCASE or lowercase—but you don’t notice, because that’s how it should be, and it works well.

For example, emailing [email protected] goes to the same place as [email protected]. Visiting www.WikiPedia.ORG takes you to the same site as www.wikipedia.org.

The email system and domain name system are both case-insensitive, which was a good call back in the 1970s. Thousands of years of combined technical support time have been avoided by this decision.

Despite this, you can still find apps and websites where you have to sign in with a case-sensitive username or email address. Not only does this lead to errors—a user who cannot sign in because their username had a capital letter they forgot about—but even if they do remember, switching between lowercase and uppercase letters on a fiddly mobile...