Abstract: A method is proposed to automatically, securely and directly notify and inform, selected contacts in the digital address book of a user's device when there is a change in the user's contact information. A system is proposed that does not require the user to store or maintain private data to any third party service server or central database repository in the cloud or not in the cloud. The proposed system employs TetherTap (“TT”) Privacy by Design (“PbD”) architecture resulting in full EU GDPR and California CCPA regulatory compliance, storing and transmitting data with default address book and peer to peer (“P2P”) communication platforms. The method proposed does not require receiver devices to be programmed with system functionality, however, it is designed to allow the receiver of an update from the user to set up and install reciprocal functionality.