Digital Signage Board Encrypted Profile Aggregation for Privacy
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Solution Overview
Problem
Conventional digital signage board (DSB) solutions fail to ensure user privacy while displaying targeted multimedia content, as user profiles may be compromised or known by DSB managers, leading to potential privacy violations.
Innovation Solution
A method and system that encrypts user profile information from devices within proximity range of a DSB, aggregates this information, and transmits it to a content server for decryption and targeted content selection, ensuring privacy through secure and anonymous data handling.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If user profile information is collected and used for targeted content display, then content relevance and advertising effectiveness are improved, but user privacy and confidentiality are compromised
Solution Approach 1:
The system segments user profile data into multiple encrypted components distributed across different servers. No single server holds the complete decrypted profile, forcing an division of data access that prevents any one entity from compromising full user privacy while still enabling targeted content through aggregated encrypted queries.
Solution Approach 2:
The patent introduces encrypted profile data and secure aggregation protocols as intermediaries between user data and content delivery. The encrypted profile acts as a mediator that allows content servers to perform targeted content selection without directly accessing or knowing the actual user profile information, thus maintaining privacy while achieving relevance.
2Measurement precision
If user profile data is stored and processed centrally, then targeted content selection accuracy is improved, but security risks and data breach potential increase
Solution Approach 1:
The system divides centralized profile storage into distributed encrypted segments across multiple servers. Each server holds only encrypted portions or aggregation results, not complete user profiles. This segmentation maintains the ability to perform accurate targeted content selection through cryptographic operations while eliminating the single point of failure and reducing security risks associated with centralized storage.
Solution Approach 2:
The patent applies preliminary encryption to user profile data before it is stored or processed. The encryption is performed in advance (preliminarily) so that even if data is intercepted or accessed during storage or processing, it remains secure. This preliminary protective action maintains security while allowing the encrypted data to be used for accurate targeted content selection.
3Object-affected harmful factors
If encrypted profile data is transmitted and processed across multiple servers, then user privacy is protected, but system complexity and computational overhead increase
Solution Approach 1:
The system implements universal encryption protocols and standardized data structures that work across all servers in the distributed architecture. The encrypted profile format and aggregation methods are designed to be universally applicable, allowing the same cryptographic operations to be performed on any server without requiring server-specific implementations, thus reducing operational complexity despite the distributed nature.
Solution Approach 2:
The patent transforms the state of profile data from plaintext to encrypted form, fundamentally changing the parameter of data representation. This parameter change enables privacy protection while the encrypted state itself becomes the new working format that servers process. The transformation is performed once during encryption, and subsequent operations work with this changed parameter, avoiding repeated complex encryption/decryption cycles.
4Productivity
If complete user profiles are accessible to DSB managers, then personalized advertising effectiveness is improved, but confidentiality and trust are compromised
Solution Approach 1:
The encrypted profile data serves as an intermediary between the user's actual profile information and the DSB manager's content selection process. The manager works with encrypted data and aggregation results rather than direct access to complete user profiles. This intermediary layer maintains advertising effectiveness through accurate encrypted matching while preserving confidentiality by preventing direct observation of user information.
Solution Approach 2:
The system creates and uses encrypted copies of user profile data instead of distributing or storing the original plaintext profiles. These encrypted copies contain all necessary information for targeted content selection but cannot be reverse-engineered to reveal actual user information. The copy maintains functionality for advertising while eliminating the confidentiality risk of original data exposure.
Data Source
AI summary
The disclosed embodiments illustrate methods for displaying targeted content on a digital signage board (DSB). The method includes receiving encrypted profile information from each of a plurality of user-computing devices when the plurality of user-computing devices is in a proximity range of the DSB, wherein the DSB is associated with one or more products and/or services. The method further includes aggregating the encrypted profile information received from each of the plurality of user-computing devices to generate an aggregated encrypted profile. Further, the method includes transmitting the aggregated encrypted profile to a content server, wherein the content server decrypts the aggregated encrypted profile to select the targeted content from a content repository associated with the one or more products and/or services, wherein the targeted content is displayed on the DSB.