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bhaskaran7010
no, this is not an alphanumeric character because it has more than one characters
! @ # $ % ^ & * ( ) > < { }
Ben10, Johnny5, THX1138...
The username you entered contains characters that are not letters or numbers. If you entered a space or a dash (-) you'll probably get this error.
Anything that is a number or a letter is an alphanumeric character, so examples are punctuation and symbols: [, }, ~, /, *, @, and so on.
Any character which is not A-Z or 0-9. Examples of non-alphanumeric characters: !"£$%^&*()
akram
Any character which is not A-Z or 0-9. Examples of non-alphanumeric characters: !"£$%^&*()
Alphanumeric user name would be using numbers and letters in the name. John1234 is an example. Remember that most naming conventions for websites or even some domains require strong user name/password encryption. And example would be. JohN_1234. Note the use of caps and underscore. This would less likely be able to crack or figure out by an unwanted user.
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