At sign

Also called at symbol.

How to type it

Left ring finger with Shift.

Common uses

• The @ separates the user name from the domain in an email address, as in name@example.com.
• Social networks use @ before a user name to mention or address a person.
• In older commercial writing, @ means at a price of, as in 4 apples @ $2.

Less common uses

• In Python, @ marks a decorator, which wraps the function or class written beneath it.
• On a US keyboard, @ is typed with Shift and the 2 key.