Hi! I want to create a quiz. This will have a couple of questions and then lead to a video. I wish to match the anwser to one of those questions - “what is your cellphone?”- to a master dataset to ensure only the people that are part of my study are answering the quiz. Therefore, the restriction for the cellphone number question is that this number matches exactly with any number that I have in my previously collected data (that is in xlsx). Is this possible with typeform?
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