I saw this recently:

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> "If one, G-d forbid, [is not careful to place the tefillin above his hairline and instead] puts the tefillin on his forehead, he is following a custom of the Karites, and has not fulfilled the mitzvah at all….and has said a bracha in vain." {Mishna Berura 27:33}
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I had thought that the Karaites did not wear tefillin and interpreted the verse in the Torah as "figurative"?