ANSWER: Of course this is prohibited and cheating.  Prophet salla Allahu Alaihi wa Sallam said a person who cheats is not from among us.

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ANSWER: This is not permissible. From the entrance of the room, stand back and nod while putting your hands on your chest. She will understand. Even if she doesn’t, simply tell her that you are not allowed to shake hands in Islam with the opposite gender. 

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