If you're subject to GDPR, other privacy requirements, or you just want to collect contact information from your photo booth guests, you need to use the Data Collection feature.
When you set up data collection you can choose what information your guests are able to or required to enter in order to use the booth. This information is then included in the guest data for the event (ie. when you export a CSV).
To see how to do this & how it works, please watch our video: