Monitoring user activity

A non-transitory computer-readable storage medium comprising computer-executable instructions which, when executed by a processor, cause a computing device to perform a method of monitoring user activity in respect of a plurality of applications on a computing device, the method comprising:

• storing, by a first application running on the computing device, a first timestamp indicating the time that user activity was last detected in respect of the first application;
• receiving, by the first application, a message from a second application running on the computing device, the message comprising a second timestamp indicating the time that user activity was last detected in respect of the second application;
• and
• updating, by the first application, the first timestamp based on the second timestamp when the time indicated by the second timestamp is later than the time indicated by the first timestamp.

A computing device for monitoring user activity in respect of a plurality of applications running on the computing device, the computing device comprising at least one memory including computer program code associated with a first application and a second application in the plurality of applications;

• and at least one processor in data communication with the at least one memory, wherein the at least one processor is configured to:
• store, at the first application running on the computing device, a first timestamp indicating the time that user activity was last detected in respect of the first application;
• receive, at the first application, a message from the second application running on the computing device, the message comprising a second timestamp indicating the time that user activity was last detected in respect of the second application;
• and
• update, at the first application, the first timestamp based on the second timestamp when the time indicated by the second timestamp is later than the time indicated by the first timestamp.