Hi @nkardoulas, unfortunately it’s not possible to prevent people from sharing a link, but you can set permissions for only specified people to fill in the form: Managing Permissions — KoBoToolbox documentation
Alternatively you could require a code to be entered into the form otherwise the content is hidden — although this is not a secure solution as it can be worked around. For example:
survey
| type | name | label | relevant |
|---|---|---|---|
| text | code | Type code | |
| being_group | form | The form | ${code} = ‘some_secret_code’ |
| … | |||
| end_group |
