NFC Metadata Sharing with Permission Control
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Solution Overview
Problem
Current document sharing systems using near field communication (NFC) either send entire documents or rely on complex link-sharing methods, lacking efficient permission management and real-time access to the latest document versions.
Innovation Solution
A system where a sending device gathers metadata for shared content, including permissions, and sends it over an NFC link to a receiving device, allowing the content to be accessed from its original location, with permissions enforced, enabling quick sharing and ensuring the latest version is accessed.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If entire documents are sent via NFC, then the receiving device gets a complete copy of the document, but the transfer time and NFC link usage are excessive
Solution Approach 1:
The patent extracts only the essential metadata (document identifier, location, permissions) from the complete document and transmits it via NFC, while the full document remains on the server. This resolves the contradiction by providing document access without transferring the entire file, thus maintaining reliability while dramatically reducing transfer time.
Solution Approach 2:
The transmitted metadata serves multiple functions: it identifies the document, provides access location, and carries permission information. This multi-functionality allows the small metadata package to replace the need for transferring the entire document, resolving the time-completeness contradiction.
2Reliability
If document links are shared via complex methods, then permission control can be implemented, but the sharing process becomes complicated and inefficient
Solution Approach 1:
The patent merges document identification, location information, and permission settings into a single metadata package that is transmitted via NFC. This combination simplifies the sharing process to a single tap operation while maintaining comprehensive permission control, resolving the contradiction between ease of operation and reliability.
Solution Approach 2:
The metadata acts as an intermediary that carries all necessary information (document location, permissions) between the sending and receiving devices. This intermediary enables complex permission control to be implemented through a simple NFC tap, resolving the contradiction between operational simplicity and permission reliability.
3Speed
If documents are stored locally on devices, then quick access is possible, but storage space is consumed and version synchronization becomes difficult
Solution Approach 1:
The patent extracts only the document metadata (identifier and location) and stores it locally, while the actual document content remains on the server. This allows quick access through local metadata lookup while consuming minimal storage space, and version synchronization is automatically handled by accessing the latest version from the server.
Solution Approach 2:
The patent shifts from storing documents in one dimension (local device storage) to a two-dimensional approach: minimal metadata locally for quick access + full document on server for version control. This dimensional change resolves the contradiction between access speed and storage consumption.
4Reliability
If previous NFC sharing methods are used, then document transfer is possible, but permission management and real-time access control are lacking
Solution Approach 1:
The metadata package serves multiple functions simultaneously: document identification, location provisioning, and permission transmission. This multi-functionality enables comprehensive permission management without increasing system complexity, as all controls are embedded in the single metadata structure transmitted via NFC.
Solution Approach 2:
The receiving device automatically processes the metadata and applies the embedded permissions without requiring additional configuration or complex system interventions. The permission management is self-service, resolving the contradiction between reliable permission control and system simplicity.
Data Source
Figure 1A
Figure 1B
Figure 2A
AI summary
A sending device receives a user input indicating that the user wishes to share and open item of content with a receiving device. A near field communication link is opened between the sending device and the receiving device. Metadata for sharing the open data is gathered on the sending device and a permission setting user interface display is displayed, with the user input mechanism that allows a user to set permissions corresponding to the open item. User actuation of the permission setting user input mechanism is received, the permissions are added to the open item, and the metadata is sent to the receiving device over the near field communication link. The metadata includes a location of the open item. The open item can then be accessed by the receiving device, with the permissions applied to the open item.