What type of field is specifically used to store alphanumeric information?

The text field is specifically designed to store alphanumeric information, which includes both letters and numbers. This type of field is commonly used in forms where users need to input names, addresses, or any other combination of letters and digits. The text field allows for a flexible range of input, making it suitable for various data types, such as usernames or other identifiers that may contain both characters and numbers.

In contrast, other options like the text area are primarily used for larger blocks of text, such as comments or descriptions, while numeric fields are restricted to numerical entries only. The password field is similar to a text field but is specifically tailored for confidential inputs, obscuring the characters for security purposes. Hence, the text field stands out as the option best suited for general alphanumeric data input.