Secondary device remote signaling-based video authentication method and system

A system for verifying an authenticity of images in order to protect user resources, the system comprising a processor and machine-readable media including instructions which, when executed by the processor, cause the processor to:

• receive, at a cloud-based authentication system and from a first computing device including a camera, a request to access a secured resource of a first user;
• access a smart device registry associated with the first user, by the authentication system, to determine at least one second computing device of the first user for which the first user has authorized and enabled execution of a control signal;
• in response to the request, transmit, from the authentication system, a first control signal to the determined second computing device associated with the first user, wherein the second computing device is different than the first computing device, the first control signal including a first pattern;
• transmit, from the authentication system, a second control signal to the first computing device, the second control signal triggering first image data captured by the camera of the first computing device;
• obtain, at the authentication system, the first image data captured by the camera of the first computing device when presentation or production of the first pattern via the second computing device was to have occurred, the first image data including the second computing device;
• determine that the first image data includes a representation of the first pattern by the second computing device;
• and
• determine, in response to the first image data including a representation of the first pattern, that the first user is permitted access to the secured resource of the first user via the first computing device.