Case sensitivity

With computers, case sensitivity is sometimes a problem. Words with capital letters don't always have the same meaning as words with lowercase letters. For example, Bill is be a politician's name while a bill is legislation he signs.

Some computer languages are case-sensitive (Java, C++), while others are case-insenesivitev (Visual Basic). Often, computer passwords are case-sensitive and computer "user names" are not, which can be confusing for the naive user.