You can restrict access to your survey from the collector options. If you turn on Password Protection, respondents need to enter a password in order to take the survey. If you turn on IP Restrictions, you can allow or block a list of IP addresses.
If you turn on Password Protection, when respondents click the survey link, they'll be prompted to enter a password in order to access the survey. There isn't a way to create a unique password for each respondent.
To add a password to your survey:
To restrict access to your survey based on the IP addresses of your respondents:
IP addresses are represented in dot-decimal notation—four different numbers, each ranging from 0 to 255, separated by decimal points. Each number represents 8 bits (an octet) of the IP address. Here's an example with each of the four octets shown in a different color: 172.16.254.1
You can use an asterisk (*) as a wildcard to allow or block a particular range of IP addresses by octet. Here are some examples:
|192.*||Includes IPs that start with the first octet. The second, third, and fourth octets could each be any number from 0 to 255.|
|192.0.*||Includes IPs that start with the first two octets. The third and fourth octets could each be any number from 0 to 255.|
|192.0.2.*||Includes IPs that start with the first three octets. The fourth octet could be any number from 0 to 255.|
|192.0.*.2||Includes IPs that start with the first two octets and end with the fourth octet. The third octet could be any number from 0 to 255.|
|192.*.2||Includes all IPs that contain the first and third octet. The second and fourth octets could each be any number from 0 to 255. This equivalent to 192.*.2.*, only you don't need to put the last asterisk.|
If you're in a team, you can share a survey with others and set permissions to limit what they can do with the survey. For example, you can give someone View Only access to the survey design, and no access to analyze results.