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System for using QR codes for Secure Private Messaging Disclosure Number: IPCOM000224403D
Publication Date: 2012-Dec-18
Document File: 3 page(s) / 96K

Publishing Venue

The Prior Art Database


Disclosed is a system for combining Quick Response (QR) codes, or any other symbol family with scanning properties, with pre-shared, per-person keys to leave secure individualized messages.

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This is the abbreviated version, containing approximately 52% of the total text.

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System for using QR codes for Secure Private Messaging

Instances occur in which a person needs to leave a message for others in a public or non-secure location (e.g., a note on their front door for a delivery person, a note on their mailbox for visitors, etc.); there is no way to ensure that only the person(s) to whom the message is directed will see that message. If undesired individuals see the message, it can cause a security risk to the individual.

The idea of the invention is to combine the use of a Quick Response (QR) code that resolves to a Uniform Resource Locator (URL) with a pre-shared per-person key. The combination of the QR-code URL plus the pre-shared key resolves to a personalized message. For other users who scan the QR-code a standardized message is used, which can change depending on other variables (e.g., date, time of day, weather, etc.) The same variables can also be factored into the personalized messages. The combination of the QR-code and the pre-shared per-person key can even resolve to an effective user signature that can be used for accepting packages that require written signatures.

A user can always keep the same QR-code on their door (or mailbox). With that code, only the desired recipients will receive the message; others will not be able to obtain any information from the QR-code. This means of communication is more efficient and secure than leaving a note posted one's front door or trying to text or send emails to everyone that needs to receive a message (e.g., to inform party guests that the location of the party has changed).

One embodiment is assisted with the addition of an asymmetric key (public/private key pair) system. The sender encrypts a message for...