Methods and systems for protecting website forms from automated access

DC
  • US 8,621,578 B1
  • Filed: 12/10/2008
  • Issued: 12/31/2013
  • Est. Priority Date: 12/10/2008
  • Status: Active Grant
First Claim
Patent Images

1. A method for generating a completely automated test to tell computers and humans apart comprising:

  • generating a matrix of non-overlapping randomly selected images in response to an access request of a user, the dynamic graphical arrangement comprising one randomly selected image from a selected image category chosen for an image recognition task and at least one image not from the selected image category, wherein each image is associated with a unique randomly generated access code, wherein the image recognition task comprises an instruction to select one image corresponding to the selected image category from the matrix of non-overlapping randomly selected images;

    presenting the dynamic graphical arrangement of randomly selected images to the user and communicating the image recognition task to the user;

    receiving an input from the user access device at a server system, the input comprising the unique randomly generated access code associated with the one image from the selected category;

    the server system comparing the input from the user access device to an authenticating reference code to confirm the user is a human and not a computer; and

    wherein the matrix comprises at least one image known to belong to the selected image category, at least one image known to not belong to the selected image category and at least one image suspected to belong to the selected image category and wherein the user is still granted access to the website when the input from the user access device comprises selection of the at least one image known to belong to the selected image category and selection or omission of the at least one image suspected to belong to the selected image category.

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