Detecting periods of inactivity

An apparatus for determining one or more period of inactivity of a subject, the apparatus comprising a processor configured to:

• receive a first set of one or more signals indicative of detected activity of a subject in a first area, the first area comprising a sleeping area;
• identify, based on the first set of one or more signals, a first point in time after cessation of the detected activity in the first area by a predetermined time interval;
• store, based on the identification, a first indication that signifies a transition of the subject into a first state, wherein the first state is a sleep state;
• receive a second set of, one or more signals indicative of activity in a second area (108, 102) that is different than the first area;
• identify, based on the second set of one or more signals, a second point in time that is after the first point in time;
• determine whether the first set of signals provided any signals indicative of activity detected in the first area within a second time interval immediately preceding the second point in time;
• if the first set of signals provided any signals indicative of activity detected in the first area within the second time interval immediately preceding the second point in time, store a second indication that signifies a transition of the subject into a second state, wherein the second state is an awake state;
• and
• if the first set of signals did not provide any signals indicative of activity detected in the first area within the second time interval immediately preceding the second point in time, refrain from storing the second indication that signifies a transition of the subject into a second state.

A system for determining one or more periods of inactivity of a subject, the system comprising:

• a first sensor detecting activity in a first area, the first area comprising a sleeping area, and generate a first set of one or more signals indicative of detected activity of a subject within the first area;
• a second sensor detecting activity in a second area that is different than the first area, and to generate a second set of one or more signals indicative of activity within the second area;
• a processor communicatively coupled to the first sensor and the second sensor, the processor being configured to:
• identify, based on the first set of one or more signals received from the first sensor, a first point in time after cessation of the detected activity in the first area by a predetermined time interval;
• store, based on the identification, a first indication that signifies a transition of the subject into a first state, wherein the first state is a sleep state;
• identify, based on the second set of one or more signals received from the second sensor, a second point in time that is after the first point in time;
• determine whether the first sensor provided any signals indicative of activity detected in the first area within a second time interval immediately preceding the second point in time:
• if the first sensor provided any signals indicative of activity detected in the first area within the second time interval immediately preceding the second point in time, store a second indication that signifies a transition of the subject into a second state, wherein the second state is an awake state;
• and if the first sensor did not provide any signals indicative of activity detected in the first area within the second time interval immediately preceding the second point in time, refrain from storing the second indication that signifies a transition of the subject into a second state.