Abstract: A system implements a Policy-Governed Content Mediation Model for Mobile Augmented Reality (MAR) applications (MAR-Apps) by regulating the real-time interaction between digital MAR content, e.g., 3D objects displayed on top of a video stream, and the actual physical world. The system regulates the way MAR content is distributed inside physical spaces by means of the specification, evaluation, and enforcement of user-friendly authorization policies based on security-relevant information, a.k.a., attributes, ultimately resulting in the avoidance of unwanted content distribution and/or unwanted user interactions. Consequently, the system protects sensitive spaces as only authorized MAR content is authorized to merge with the physical surroundings. Additionally, the system allows benign multi-user interactions and respects the users' privacy by granting and enforcing management over user-supplied sensitive information.

Abstract: An embodiment of a blockchain-based cryptographic key generation method and system that leverages existing values locally available within a distributed ledger to generate cryptographic keys independent of a third-party server is disclosed herein.

Abstract: An embodiment of a blockchain-based cryptographic key generation method and system that leverages existing values locally available within a distributed ledger to generate cryptographic keys independent of a third-party server is disclosed herein.