| CPC H04L 63/083 (2013.01) [G06F 3/0486 (2013.01); G06F 21/36 (2013.01); H04L 63/0876 (2013.01); H04L 63/20 (2013.01); H04L 2463/082 (2013.01)] | 20 Claims |
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9. A method for multi-factor authentication, comprising:
receiving, by a server device and from a first device, a credential and a request to access a resource;
transmitting, by the server device and to a second device associated with the credential, an image, or a link thereto, the image being composed of a set of visual elements, wherein each visual element of the set of visual elements has a particular visual attribute;
transmitting, by the server device and to the first device, user interface information to cause the first device to present a user interface indicating that a user of the first device is to recreate the image by inputting one or more visual elements via the user interface to form an input image of an authentication symbol with reference to the image accessed by the second device, the input image being composed of a set of one or more visual elements;
receiving, by the server device and from the first device, information indicative of the input image formed via user input of the set of one or more visual elements via the user interface of the first device, wherein the input image is formed via at least one of:
selecting the set of one or more visual elements, presented via the user interface, to form the input image in an area of the user interface, or
drawing the set of one or more visual elements in the area of the user interface; and
granting or denying access to the resource based on the image and the information indicative of the input image.
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