Presenting Visual Challenges for Verifying Human Interaction
A computing device-implemented method includes providing a presentable visual challenge for determining if access should be granted. The visual challenge includes presenting obscured text wherein the manner in which the text is obscured changes over a period of time. The method also includes determining if a received response substantially matches the text to determine if access should be granted.
1 . A computing device-implemented method comprising:
providing a presentable visual challenge for determining if access should be granted, the visual challenge includes presenting obscured text wherein the manner in which the text is obscured changes over a period of time; and
determining if a received response substantially matches the text to determine if access should be granted.
2 . The computing device-implemented method of claim 1 wherein the manner in which the text is obscured includes blocking a portion of the text from being viewed.
3 . The computing device-implemented method of claim 2 wherein the blocked portion of the text extends along a horizontal direction.
4 . The computing device-implemented method of claim 2 wherein the blocked portion of the text extends along a vertical direction.
5 . The computing device-implemented method of claim 1 wherein the manner in which the text is obscured includes blocking non-overlapping portions of the text from being viewed over the period of time.
6 . The computing device-implemented method of claim 1 wherein the manner in which the text is obscured includes randomly presenting different portions of the text over the period of time.
7 . The computing device-implemented method of claim 1 wherein the manner in which the text is obscured includes distorting a portion of the text.
8 . The computing device-implemented method of claim 1 wherein the manner in which the text is obscured includes presenting a subset of one or more characters included in the text during one portion of the time period and a different subset of one or more characters included in the text during another portion of the time period.
9 . The computing device-implemented method of claim 1 wherein providing a presentable visual challenge includes a server device sending data that represents the presentable visual challenge to a client device for display.
10 . The computing device-implemented method of claim 1 wherein if a match is determined, granting a client device access to a server device.
11 . A system comprising:
a computing device for providing a presentable visual challenge for determining if access should be granted to a resource, the visual challenge includes presenting obscured text wherein the manner in which the text is obscured changes over a period of time; and
wherein the computing device is configured to determine if a received response substantially matches the text to determine if access should be granted.
12 . The system of claim 11 wherein the manner in which the text is obscured includes blocking a portion of the text from being viewed.
13 . The system of claim 12 wherein the blocked portion of the text extends along a horizontal direction.
14 . The system of claim 12 wherein the blocked portion of the text extends along a vertical direction.
15 . The system of claim 11 wherein the manner in which the text is obscured include blocking non-overlapping portions of the text from being viewed over the period of time.
16 . The system of claim 11 wherein the manner in which the text is obscured includes randomly presenting different portions of the text over the period of time.
17 . The system of claim 11 wherein the manner in which the text is obscured includes distorting a portion of the text.
18 . The system of claim 11 wherein the manner in which the text is obscured includes presenting a subset of one or more characters included in the text during one portion of the time period and a different subset of one or more characters included in the text during another portion of the time period.
19 . The system of claim 11 wherein providing a presentable visual challenge includes the computing device sending data that represents the presentable visual challenge to a client device for display.
20 . The system of claim 11 wherein if a match is determined, a client device is granted access to the resource.
21 . One or more computer readable media storing instructions that are executable by a processing device, and upon such execution cause the processing device to perform operations comprising:
providing a presentable visual challenge for determining if access should be granted, the visual challenge includes presenting obscured text wherein the manner in which the text is obscured changes over a period of time; and
determining if a received response substantially matches the text to determine if access should be granted.
22 . The computer readable media of claim 21 wherein the manner in which the text is obscured includes blocking a portion of the text from being viewed.
23 . The computer readable media of claim 22 wherein the blocked portion of the text extends along a horizontal direction.
24 . The computing readable media of claim 22 wherein the blocked portion of the text extends along a vertical direction.
25 . The computing readable media of claim 21 wherein the manner in which the text is obscured include blocking non-overlapping portions of the text from being viewed over the period of time.
26 . The computing readable media of claim 21 wherein the manner in which the text is obscured includes randomly presenting different portions of the text over the period of time.
27 . The computing readable media of claim 21 wherein the manner in which the text is obscured includes distorting a portion of the text.
28 . The computing readable media of claim 21 wherein the manner in which the text is obscured includes presenting a subset of one or more characters included in the text during one portion of the time period and a different subset of one or more characters included in the text during another portion of the time period.
29 . The computing readable media of claim 21 wherein providing a presentable visual challenge includes a server device sending data that represents the presentable visual challenge to a client device for display.
30 . The computing readable media of claim 21 wherein if a match is determined, granting a client device access to a server device.