It is best to publish your questionnaire from Eval&GO because it automatically generates a unique link for each respondent.
To do this :
Go to my Surveys, and click on”publish”.
In "options" tab, tick the box « Limit to one reply per computer (based on IP address ) ».
Only one survey can be submitted from a single IP address.
Be careful : IP addresses can be the same for severals computers (for a same company). Ticking this box, means that you only allow one reply per IP address. Others respondents will receive a message that says « You have already completed this questionnaire. »
To begin import a list of logins on Eval&GO (they don’t need to be associated with contacts).
To do this:
Click on « CSV import »,
Select « Login Code » and import your CSV file.
In publishing options, tick « Access the questionnaire through login » and « save ».
Provide a personal access code for each respondent.
Each login can only be used once.
Please note, your respondents cannot access your questionnaire without their login.