Cookie details

[LPBenefield]

When I read the documentation, it said that when you set the survey permission to allow each respondent to complete only one survey, the application saves a cookie to the person's computer.

What is contained in the cookie? (IP Address? Invitation ID? or some combination?)

What if that person accesses the survey from a different computer? Home and Office computers?

If it's the IP address, what if your organization doesn't assign a permanant IP address to their users? What if an office computer's IP address changes every four or five days or on restart?

All of these issues effect the data...

[pwiesner]

The concerns you raise are valid. Because cookies are saved to the respondents machine you can not guarantee that a determined individual will only take the survey once. As you point out they could delete the cookie, or simply use a different machine.

If you need to guarantee that a user only takes a survey once it is our suggestion that you use registered users. In this situation all response tracking is handled server side within Checkbox.

[LPBenefield]

Do you know what is stored in the cookie and the cookie name?

[ncushing]

The cookie name is configurable through the Application Settings screen. Stored in the cookie are the number of responses a particular respondent has entered for surveys he/she has taken.

In Checkbox, only a guid identifying the respondent is stored in the cookie.

Thank you.