Methods and apparatus to monitor media presentations

1. A media device comprising:

a registrar, implemented by a processor, to receive demographic information from a user, to transmit the demographic information to a central facility, and to store a consent identifier in a pasteboard of the media device, the consent identifier accessible to a first instrumented application and a second instrumented application executed in a sandbox environment, the consent identifier to indicate to the first instrumented application and the second instrumented application that monitoring is allowed; and

the first instrumented application to access the consent identifier from the pasteboard, to present media, to generate monitoring information if the consent identifier permits collection of monitoring information, to not generate monitoring information if the consent identifier does not permit the collection of the monitoring information, and to transmit the monitoring information to the central facility.

2. The media device as described in claim 1 , wherein the registrar is to store a panelist identifier identifying a panelist associated with the media device.

3. The media device as described in claim 2 , wherein the registrar is to access the panelist identifier from the central facility.

4. The media device as described in claim 2 , wherein the registrar is to determine the panelist identifier.

5. The media device as described in claim 2 , wherein the panelist identifier is based on user-identifying information received from the panelist.

6. The media device as described in claim 2 , wherein the panelist identifier is encrypted.

7. The media device as described in claim 1 , wherein the first instrumented application is to present media via at least one of a game, a media presenter, or a news presenter.

8. The media device as described in claim 1 , wherein the registrar is installed on the media device prior to a time of sale of the media device.

9. The media device as described in claim 1 , wherein the first instrumented application is installed via an application store.

10. The media device as described in claim 1 , wherein the first instrumented application is installed without reference to the consent identifier.

11. The media device as described in claim 1 , wherein the registrar is installed on the media device at a time of sale of the media device.

12. A non-transitory computer readable medium comprising instructions which, when executed, cause a machine to at least:

collect demographic information from a user at a registrar of a media device;

transmit the demographic information to a central facility from the registrar; and

store a panelist identifier identifying the user in a pasteboard of the media device, the panelist identifier accessible to a first monitoring-enabled application and a second monitoring-enabled application, the first monitoring-enabled application and the second monitoring-enabled application separate from the registrar, the panelist identifier to be retrieved by the first monitoring-enabled application, the first monitoring-enabled application to present media, the first monitoring-enabled application to collect media monitoring information if the panelist identifier is in the pasteboard and to disable collection of the media monitoring information if the panelist identifier is not in the pasteboard.

13. The non-transitory computer readable medium of claim 12 , wherein the instructions, when executed, cause the machine to request permission from the user to enable monitoring.

14. The non-transitory computer readable medium of claim 13 , wherein the instructions, when executed, cause the machine to at least:

if permission is received, store a consent identifier enabling the collection of media monitoring information by the first monitoring-enabled application and the second monitoring-enabled application; and

if permission is not received, at least one of not store or delete the consent identifier.

15. The non-transitory computer readable medium of claim 14 , wherein the consent indicator enabling monitoring is the panelist identifier.

16. The non-transitory computer readable medium of claim 12 , wherein the panelist identifier is based on the demographic information.

17. The non-transitory computer readable medium of claim 12 , wherein the panelist identifier is requested from the central facility.

18. The non-transitory computer readable medium of claim 12 , wherein the panelist identifier is encrypted.

19. A method for monitoring a media device, the method comprising:

collecting demographic information from a user with a registrar of a media device;

transmitting the demographic information to a central facility from the registrar; and

storing, with a processor executing the registrar, a panelist identifier identifying the user in a pasteboard of the media device, the panelist identifier accessible to a first monitoring-enabled application and a second monitoring-enabled application, the first monitoring-enabled application and the second monitoring-enabled application separate from the registrar, the panelist identifier to be retrieved by the first monitoring-enabled application, the first monitoring-enabled application to present media, the first monitoring-enabled application to disable collection of media monitoring information if the panelist identifier is not in the pasteboard.

20. The method as described in claim 19 , further including requesting, with the registrar, permission from the user to enable monitoring.