Abstract: Some embodiments of the present invention provide a system and a method for anonymizing unique identifiers of objects on a networked database and for exchange of anonymized data across a network. A personalized database holding unique identifiers of users and/or entities may use a module to anonymize the unique identifiers of the users or entities and convert it to anonymized identifiers using an asymmetric conversion. In consequence, no unique identifier of any user or entity get out of the personalized database. A third-party application can request the matched anonymized token for a given user identifier. The anonymized token is generated using a symmetric conversion and is unique per third party application. Then, the third-party application can retrieve data related to the unique identifier using the anonymized token. The data is only retrieved using the anonymized token only.