Is there any legitimate technical reason that some web sites forbid special characters in passwords?

Is there any legitimate technical reason that some web sites forbid special characters in passwords?
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1 Answer

Answer :

Yes, in many programming languages, certain special characters have a meaning within the program. They trigger some action, which is not what you want from a password string. If you are dealing with such a situation, you can program a routine to parse the string and escape any special characters that might cause trouble, but it’s easier and more efficient on the server side to just ban them.
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