Systems and methods for enforcing access-control policies

1. A computer-implemented method for enforcing access-control policies, at least a portion of the method being performed by a computing device comprising at least one processor, the method comprising:

identifying, by the computing device, streaming content that is being transmitted from a media server to a media playback system;

determining, by the computing device, that a supervised user is within exposure range of the media playback system, and thereby determining that the supervised user is within exposure range of the streaming content;

receiving, by the computing device, a sample of the content from a sampling system that:

is within the exposure range of the media playback system;

is physically separated from the media playback system; and

samples the content being transmitted from the media server to the media playback system;

identifying, by the computing device, an access-control policy that defines a content-access restriction for the supervised user;

determining, based on an analysis of the sample of the content by the computing device, that the access-control policy applies to the content; and

in response to determining that the access-control policy applies to the content, enforcing the access-control policy by applying the content-access restriction to the streaming content.

2. The method of claim 1 , wherein determining that the supervised user is within the exposure range of the media playback system comprises at least one of:

identifying the supervised user by collecting biometric information;

receiving identifying information of the supervised user from a networked device;

receiving login information of the supervised user from the media playback system;

detecting a device that belongs to the supervised user; and

determining that a location of the supervised user is within the exposure range.

3. The method of claim 2 , wherein determining that the location of the supervised user is within the exposure range comprises at least one of:

using a motion sensor to detect the location of the supervised user; and

determining that a location of the device that belongs to the supervised user is within the exposure range.

4. The method of claim 1 , wherein receiving the sample of the content from the sampling system comprises:

determining the sampling system is within the exposure range of the media playback system by receiving, from the sampling system, information indicating that the sampling system has detected playback of the content;

instructing the sampling system to sample the content; and

correlating the received sample with the content.

5. The method of claim 1 , wherein determining that the access-control policy applies to the content comprises matching the sample of the content to a known content.

6. The method of claim 1 , wherein determining that the access-control policy applies to the content comprises:

converting the sample of the content to textual data; and

performing a content analysis on the textual data.

7. The method of claim 6 , wherein performing the content analysis on the textual data comprises at least one of:

text mining the textual data for patterns;

categorizing the patterns into at least one content category; and

determining that the access-control policy applies to the content category.

8. The method of claim 1 , wherein enforcing the access-control policy comprises at least one of:

preventing transmission of the content from the media server to the media playback system; and

alerting an administrator that the supervised user is within the exposure range of the streaming content.

9. A system for enforcing access-control policies, the system comprising:

at least one memory device that stores one or more computer-readable instructions; and

a computing device comprising at least one hardware processor that executes the one or more computer-readable instructions to:

identify, by a computing device, streaming content that is being transmitted from a media server to a media playback system;

determine, by the computing device, that a supervised user is within exposure range of the media playback system, and thereby determining that the supervised user is within exposure range of the streaming content;

receive, by the computing device, a sample of the content from a sampling system that:

is within the exposure range of the media playback system;

is physically separated from the media playback system; and

samples the content being transmitted from the media server to the media playback system;

identify, by the computing device, an access-control policy that defines a content-access restriction for the supervised user;

determine, based on an analysis of the sample of the content by the computing device, that the access-control policy applies to the content; and

in response to determining that the access-control policy applies to the content, enforce the access-control policy by applying the content-access restriction to the streaming content.

10. The system of claim 9 , wherein the hardware processor executes the one or more computer-readable instructions to determine that the supervised user is within the exposure range of the media playback system by at least one of:

identifying the supervised user by collecting biometric information;

receiving identifying information of the supervised user from a networked device;

receiving login information of the supervised user from the media playback system;

detecting a device that belongs to the supervised user; and

determining that a location of the supervised user is within the exposure range.

11. The system of claim 10 , wherein determining that the location of the supervised user is within the exposure range comprises at least one of:

using a motion sensor to detect the location of the supervised user; and

determining that a location of the device that belongs to the supervised user is within the exposure range.

12. The system of claim 9 , wherein the hardware processor executes the one or more computer-readable instructions to receive the sample of the content from the sampling system by:

determining the sampling system is within the exposure range of the media playback system by receiving, from the sampling system, information indicating that the sampling system has detected playback of the content;

instructing the sampling system to sample the content; and

correlating the received sample with the content.

13. The system of claim 9 , wherein the hardware processor executes the one or more computer-readable instructions to determine that the access-control policy applies to the content by matching the sample of the content to a known content.

14. The system of claim 9 , wherein the hardware processor executes the one or more computer-readable instructions to determine that the access-control policy applies to the content by:

converting the sample of the content to textual data; and

performing a content analysis on the textual data.

15. The system of claim 14 , wherein performing the content analysis on the textual data comprises at least one of:

text mining the textual data for patterns;

categorizing the patterns into at least one content category; and

determining that the access-control policy applies to the content category.

16. The system of claim 9 , wherein the hardware processor executes the one or more computer-readable instructions to enforce the access-control policy by at least one of:

preventing transmission of the content from the media server to the media playback system; and

alerting an administrator that the supervised user is within the exposure range of the streaming content.

17. A non-transitory computer-readable medium comprising one or more computer-executable instructions that, when executed by at least one processor of a computing device, cause the computing device to:

identify, by the computing device, streaming content that is being transmitted from a media server to a media playback system;

determine, by the computing device, that a supervised user is within exposure range of the media playback system, and thereby determine that the supervised user is within exposure range of the streaming content;

receive, by the computing device, a sample of the content from a sampling system that:

is within the exposure range of the media playback system;

is physically separated from the media playback system; and

samples the content being transmitted from the media server to the media playback system;

identify, by the computing device, an access-control policy that defines a content-access restriction for the supervised user;

determine, based on an analysis of the sample of the content by the computing device, that the access-control policy applies to the content; and

in response to determining that the access-control policy applies to the content, enforce the access-control policy by applying the content-access restriction to the streaming content.

18. The non-transitory computer-readable medium of claim 17 , wherein the computer-executable instructions cause the computing device to determine that the supervised user is within the exposure range of the media playback system by at least one of:

identifying the supervised user by collecting biometric information;

receiving identifying information of the supervised user from a networked device;

receiving login information of the supervised user from the media playback system;

detecting a device that belongs to the supervised user; and

determining that a location of the supervised user is within the exposure range.

19. The non-transitory computer-readable medium of claim 18 , wherein determining that the location of the supervised user is within the exposure range comprises at least one of:

using a motion sensor to detect the location of the supervised user; and

determining that a location of the device that belongs to the supervised user is within the exposure range.

20. The non-transitory computer-readable medium of claim 17 , wherein the computer-executable instructions cause the computing device to receive the sample of the content from the sampling system by:

determining the sampling system is within the exposure range of the media playback system by receiving, from the sampling system, information indicating that the sampling system has detected playback of the content;

instructing the sampling system to sample the content; and

correlating the received sample with the content.