Set which countries, devices, operating systems and browsers should be recorded ![\"Copy](\"https:\/\/help.uxtweak.com\/wp-content\/themes\/uxtweak\/public\/assets\/images\/icons\/link.svg\")
<\/a><\/h2>\n\n\n\n- Automatically screen out respondents based on the information that can be gained from their IP and user agent information<\/li>\n\n\n\n
- By default, all respondents are accepted in the study<\/li>\n\n\n\n
- You can screen out respondents by their location, device, operating system and browser<\/li>\n\n\n\n
- Either select <\/span>only record from allowed countries\/devices\/operating systems\/browsers <\/span><\/b>to create a whitelist or select <\/span>never record from blocked countries\/devices\/operating systems\/browsers <\/span><\/b>to create a blacklist<\/li>\n\n\n\n
- Click <\/span>Select locations\/devices\/systems\/browsers <\/span><\/b>to pick which ones should or shouldn’t be recorded (depending on what you chose in the previous step)<\/li>\n<\/ul>\n\n\n\n \n
![\"Choose](\"https:\/\/help.uxtweak.com\/wp-content\/uploads\/2025\/05\/1-107.png\")
\n \n \n Choose whom to target<\/h4>\n
For locations, devices, operating systems and browsers, you can select which ones you want to target in your study. You can target absolutely everyone, just a selection of them (whitelist), or everyone except for a selection of them (blacklist).<\/p>\n <\/div>\n
\n\n <\/div>\n <\/div>\n <\/div>\n \n\n \n ![\"Creating](\"https:\/\/help.uxtweak.com\/wp-content\/uploads\/2025\/05\/2-84.png\")
\n \n \n Creating whitelists and blacklists<\/h4>\n
To pick locations, devices, operating systems or browsers to be or not to be targeted, simply check the right ones on the list.<\/p>\n <\/div>\n
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Choose whom to target<\/h4>\n
For locations, devices, operating systems and browsers, you can select which ones you want to target in your study. You can target absolutely everyone, just a selection of them (whitelist), or everyone except for a selection of them (blacklist).<\/p>\n <\/div>\n
\n\n <\/div>\n <\/div>\n <\/div>\n \n\n
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Creating whitelists and blacklists<\/h4>\n
To pick locations, devices, operating systems or browsers to be or not to be targeted, simply check the right ones on the list.<\/p>\n <\/div>\n
![\"Blocking](\"https:\/\/help.uxtweak.com\/wp-content\/uploads\/2025\/05\/3-56.png\")
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