Secure display element

• US 9,858,432 B2
• Filed: 08/30/2016
• Issued: 01/02/2018
• Est. Priority Date: 10/29/2014
• Status: Expired due to Fees

• Current Assignee: Block, Inc. (f/k/a Square, Inc.)
• Original Assignee: Block, Inc. (f/k/a Square, Inc.)
• Inventors: Dai Zovi, Dino
• Primary Examiner(s): Cervetti, David Garcia
• Application Number:
  US15/252,113
• Publication Number:
  US 20160371498A1
• Time in Patent Office: 490 Days
• CPC Class Codes: G06F 21/36 by graphic or iconic representation
• CPC Class Codes: G06F 21/6209 to a single file or object, e.g. in a secure envelope, encrypted and accessed using a key, or with access control rules appended to the object itself
• CPC Class Codes: G06F 21/84 output devices, e.g. displays or monitors

Abstract

Techniques for securely displaying sensitive information against attempts to capture such information via screenshots are introduced. Similar to the pieces of a puzzle, a plurality of images that collectively represent a keypad (for example) are generated and each image represents a different part of the characters. The generated images are to be displayed to a human user in a sequential fashion at least at a predetermined minimum frame rate, such that the plurality of images sequentially displayed are perceivable by the human user collectively as the keypad. In each of the plurality of images, at least a part of the characters of the keypad is disguised or concealed, and in some embodiments, to the extent that not a single character of the keypad is recognizable by a human or a machine. Further, bogus data can be selectively inserted to enhance security.

Claims

1. A method comprising:

detecting, by a computing device, an item of information to be displayed;

generating, by the computing device, a plurality of images that collectively represent the item of information being displayed, wherein generating the plurality of images includes;

executing, by a dedicated graphics processor of the computing device, a shading function that at least one of disguises or conceals different segments of the item of information in different generated images; and

converting outputs of the shading function into image information that represents the plurality of images, wherein individual images of the plurality of images are different from other images of the plurality of images and collectively the plurality of images include a complete image of the item of information; and

displaying, on a display of the computing device, the plurality of images at least at a frame rate.

2. The method of claim 1, wherein displaying the plurality of images at least at the frame rate comprises sequentially displaying images of the plurality of images at at least a minimum frame rate at which a human user perceives the plurality of images collectively as a single, static image showing the item of information.

3. The method of claim 1, wherein the images of the plurality of images are displayed in a randomized sequence.

4. The method of claim 1, wherein the shading function at least one of disguises or conceals the different segments of the item of information by varying at least one of a location, a shape, an opacity, an optical refractivity, a brightness, a texture, or a depth of a mask.

5. The method of claim 1, wherein the shading function at least one of disguises or conceals the different segments of the item of information by varying at least one of hue or contrast of the different segments of the item of information.

6. The method of claim 1, wherein:

the shading function at least one of disguises or conceals the different segments of the item of information by altering content of the item of information,

at least one different part of the content of the item of information is altered on different images of the individual images, and

the plurality of images, when sequentially displayed at the frame rate, are perceivable by a human user collectively as the complete item of information without alteration.

7. The method of claim 1, further comprising:

determining the frame rate based at least partially on a computing performance of the computing device; and

dynamically adjusting a total number of the segments of the item of information based on a determined frame rate.

8. The method of claim 7, wherein said dynamically adjusting the total number of segments comprises:

determining that an effective frame rate is reducing; and

based at least partially on determining that the effective frame rate is reducing, reducing the total number of the segments, wherein the total number of the segments remains above a minimum threshold defined by a minimum security level.

9. The method of claim 1, further comprising receiving an instruction to display the item of information in an area of the display, wherein the instruction is received from a server remote from the computing device or from another software application via an application programming interface (API).

10. A computing device comprising:

a display to display an item of information;

a processor configured by executable instructions to generate a plurality of images that collectively represent the item of information displayed, wherein the processor generates the plurality of images by;

executing, by the processor, a shading function that at least one of disguises or conceals different segments of the item of information in different generated images; and

converting outputs of the shading function into image information that represents the plurality of images, wherein individual images of the plurality of images are different from other images of the plurality of images and collectively the plurality of images include a complete image of the item of information; and

a rendering pipeline coupled to the processor and that displays, on the display, the plurality of images at least at a frame rate.

11. The device of claim 10, wherein displaying the plurality of images at least at the frame rate comprises sequentially displaying images of the plurality of images at at least a minimum frame rate at which a human user perceives the plurality of images collectively as a single, static image showing the item of information.

12. The device of claim 10, wherein the rendering pipeline comprises:

a vertex shader that at least one of disguises or conceals at least one segment of the item of information in the different images; and

a rasterizer that converts outputs sourced from the vertex shader into pixel information that represents the plurality of images.

13. The device of claim 12, wherein the item of information is at least one of disguised or concealed to an extent that no single character on the item of information is recognizable from any single image of the plurality of images.

14. The device of claim 10, wherein the processor is further configured to:

determine the frame rate based on a computing performance of the computing device; and

dynamically adjust a total number of the segments based on a determined frame rate.

15. A method comprising:

detecting, in a computing device, an item of information to be displayed;

generating, by the computing device, a plurality of images that collectively represent the item of information to be displayed;

determining a frame rate based on a computing performance of the computing device;

displaying, on a display of the computing device, images of the plurality of images at the frame rate;

determining a change in the frame rate; and

dynamically changing a total number of the images in the plurality of images based at least partially on the change in the frame rate.

16. The method of claim 15, wherein generating the plurality of images comprises:

processing the item of information according to an image processing function that forms the plurality of images, wherein individual images of the plurality of images have at least a part of the item of information disguised or concealed, and collectively the plurality of images include a complete image of the item of information.

17. The method of claim 16, wherein the individual images of the plurality of images are at least one of disguised or concealed to an extent that the item of information is not recognizable from any single image of the plurality of images.

18. The method of claim 16, wherein the image processing function automatically varies over time and based on a computing performance of the computing device.

19. The method of claim 15, wherein dynamically changing the total number of the images comprises:

determining that an effective frame rate is reducing; and

based at least partially on determining that the effective frame rate is reducing, reducing the total number of the images, wherein reducing the total number of the images includes increasing an amount of the item of information presented one or more of the images.

20. The method of claim 19, wherein reducing the total number of the images includes maintaining the total number of the images above a minimum threshold defined by a minimum security level.