Distributed Do-Not-Contact List System
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Solution Overview
Problem
Existing do-not-contact systems, such as no-spam registries, face challenges including the risk of exposure and abuse of email addresses, single point failures, legal issues related to personally identifiable information, and insufficient user preference options, particularly in environments where message sending costs are minimal.
Innovation Solution
A distributed, hierarchical, category-specific do-not-contact list system that allows individuals to register their contact points and specify types of communications they do not want to receive, with registration information distributed among multiple nodes to prevent single point failures and ensure secure access, using encryption and periodic updates to maintain system integrity.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If a centralized do-not-contact list system is implemented, then access to the list is simplified and compliance is easier to enforce, but the system becomes vulnerable to single point failures and attacks
Solution Approach 1:
The patent divides the centralized do-not-contact list system into multiple distributed nodes or servers. Each node maintains a portion of the do-not-contact list data, allowing the system to remain operational even if individual nodes fail or are attacked. This segmentation eliminates the single point of failure while maintaining system-wide accessibility.
2Ease of operation
If email addresses are distributed in plaintext in a no-spam registry, then marketers can easily access and comply with user preferences, but the addresses risk expropriation and abuse by rogue marketers
Solution Approach 1:
The patent extracts the harmful element (plaintext email addresses) from the system while retaining the useful function (compliance verification). Instead of storing or transmitting actual email addresses, the system uses encrypted representations or hash values that allow marketers to verify whether a contact should be blocked without exposing the actual contact information to potential abuse.
Solution Approach 2:
The patent introduces an intermediary mechanism (encryption layer or verification protocol) between the do-not-contact list and marketers. This intermediary allows compliance verification to occur without direct exposure of sensitive contact information, preventing rogue marketers from obtaining and abusing email addresses while still enabling legitimate compliance checks.
3Reliability
If a centralized authority collects personally identifiable information for do-not-contact lists, then compliance monitoring is improved, but legal issues arise regarding privacy and constitutional rights
Solution Approach 1:
The patent extracts personally identifiable information from the do-not-contact system while maintaining compliance enforcement capabilities. By using encrypted contact points and verification protocols that do not require collection of identifiable information, the system achieves reliable compliance monitoring without infringing on privacy rights or creating constitutional issues.
4Adaptability or versatility
If a do-not-contact list system is implemented across multiple communication technologies, then comprehensive user preference management is achieved, but system complexity increases
Solution Approach 1:
The patent creates a universal do-not-contact system that handles multiple communication technologies (email, SMS, voice calls, instant messaging) through a single unified architecture. The system uses consistent encryption and verification mechanisms across all communication types, allowing comprehensive user preference management without proportionally increasing system complexity. The same core protocol serves multiple functions across different communication channels.
Data Source
AI summary
A computer implemented method comprising receiving a list of one or more contact points from a sender and comparing the list of one or more contact points to a satellite server's do-not-contact list. Any contact point on the list of one or more contact points that appears on the satellite server's do-not-contact list is reported to the sender. The satellite server's do-not-contact list is generated from a do-not-contact list distributed by a master server. A registrant registers with the master server to provide a registrant contact point to be on the do-not-contact list to be distributed by the master server. The contact points in the registry may be organized in a hierarchy with preferences at one or more levels.