Abstract: There are provided systems and methods for on-device data privacy operations to prevent data sharing at user locations. A service provider, such as a merchant location of a merchant and/or associated online transaction processor, may provide additional services for to users via user data that may be tracked or stored of the user. However, the user may not want to share certain data with the merchant or other backend processor for privacy concerns. Thus, on-device data privacy operations may be used to detect when a user is at a location that has a corresponding privacy setting to hide or abstract user data for the location. The privacy setting may designate data to prevent from sharing when the user uses their device with devices associated with the location. Abstracted data associated with recommendations or actions to provide the user may be generated and provided to a merchant for the location.