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Strong authentification 8 months 2 weeks ago #106015

  • Padawan
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Dear All,
I would like to create a questionnaire with access doubly secure ', ie the participant must enter the token code that they have received previously by e-mail and also enter their date of birth. Is that possible? how? what file to edit?
Many thanks in advance
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Strong authentification 8 months 2 weeks ago #106023

  • orvil
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Hi Padawan,

you can access data from the participants list by using eg {TOKEN:FIRSTNAME}to write 'Hello Padawan' as a welcome in your survey text.

- So you will have to add a field in your participants list containing the date of birth. Let's say this field will be named ATTRIBUTE_1. Then fill them with correct data
- then add a field to input the date of birth for your participant. Let's say it's Q1
- then add an equation (eg named check1) comparing Q1 to ATTRIBUTE_1, eg {if(Q1==TOKEN:ATTRIBUTE_1,1,0)}

Yes and then you will have to tell all groups (or questions) via relevance equation only to accept, if date of birt was edited correctly: check1==1.

You can also use Q1==TOKEN:ATTRIBUTE_1 for each relevance equation, but I think the first solution is more flexible if you have to change anything for evaluation. You can pack all changes in only one equation and don't have to change all relevance equations.

Be the power with you ;)
Best regards/Beste Grüße,
O. Villani
Last Edit: 8 months 2 weeks ago by orvil.
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Strong authentification 8 months 2 weeks ago #106059

  • Padawan
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dear Orvil,
thank you for your response. My limesurvey version is 1.91+. I have added the fields ATTRIBUTE_1 and Q1. but I don't find where to add an equation. pls advice.
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Strong authentification 8 months 2 weeks ago #106062

  • orvil
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good morning padawan,

yup, there is no equation type question in 1.91. Anyhuw
- use eg a numerical input question type instead
- write the Formula as a default answer
- hide the question

This will lead to the same result. Hope this will serve your needs.
Best regards/Beste Grüße,
O. Villani
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