The term alphanumeric refers to a mix of alphabetical and numeric characters . It is used to define a group of Latin letters. Explore the basics of alphanumeric characters , their applications, and answers to frequently asked questions. Learn about the differences between alphanumeric and non- alphanumeric characters , examples, and how these characters enhance security and usability in passwords, coding, and more. Use of Alphanumeric Keys Alphanumeric keys are used for the type a letters, a numbers and symbols into the computer. And For passwords, use a mix of Letters that can be capital and small, Numbers, Special symbols like % $ & ! # $. Alphanumeric is a combination of alphabetic and numeric characters , which may include letters, numbers, and special characters like hyphens and underscores. It is widely used in generating various identification codes, passwords, and usernames for increased security and uniqueness.