When you back a project, the project owner will know your account name, the amount you have pledged, and the perk you have selected. Project owners never receive funders’ credit card details or other payment information.
If a project you have funded has hit its campaign goal, the project owner will receive the email address associated with your 100% Project account. They may also send you a survey requesting information needed to provide your reward. (For instance, they may need your mailing address, or T-shirt size.) Any information you provide in such surveys will be received by the project owner.
Project owners may also receive anonymized information about the ways people visit and interact with their project pages, in the form of routine traffic analytics. You can choose not to be included in Google Analytics here.