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Data privacy using padded partial data frames

IP.com Disclosure Number: IPCOM000236648D
Publication Date: 2014-May-07
Document File: 2 page(s) / 103K

Publishing Venue

The IP.com Prior Art Database

Abstract

Numerous people use their laptops or personal internet enabled devices in public locations to work on business related topics, for instance on a train, plane or hotel lobby. Information that they view on their device may be sensitive data. Although their device may have encrypted memory storage to guard against data theft in the event of the device being stolen, the information displayed on screen during use may be observed by a third party, or even by a malicious screen capture program existing on the users machine.

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Data privacy using padded partial data frames

Herein provided is a method to increase privacy whilst working on sensitive documents availed by utilisation of active 3D glasses to eliminate fake data frames. Hence, only the true data frames will be viewed by the user, whereas an external

observer will be hindered in their attempts to extract the confidential data from the noise introduced by fake data frames. The true data frames themselves are constructed through a superposition of partial frames, henceforth known as p-frames. These successive p-frames can be superimposed by the observer to create the full frame using the principle of persistence of vision.

    This method, whereby active 3D polarised glasses are synchronised with a screen that is mixing "true" data frames with "nonsense" data, is alluded to within the following blog https://www.schneier.com/blog/archives/2005/09/privacy_enhance.html (retrieved 6 May 2014). The comment on Sep 14 2005 mentions that the frame order could be pseudo-random to avoid other people "tuning-in" to the hidden data using a separate pair of active 3D glasses. However, the use of p-frames, rather than full frames, overcomes certain limitations of the inventions found in the literature.

    If using a high frame rate camera to capture the screen, it would be trivial to move through the captured frames to identify the true data being worked on. Using the disclosed system, if data had been captured via a recording device, it would be required to match and merge p-frames within any post-processing activities; a significantly greater challenge.

    If attempting to tune in to the display using a suitable set of active 3D glasses, it would not be required to be exactly in tune with the display since aliasing effects could result in observing the true data....