residents through a smart-device which
could be anything ranging from a phone to a tablet.

Multimedia sensors such as video cameras
and microphones also find their use in smart homes, making them particularly
useful say if a patient needs closer attention by the caregiver. However, their
use has been somewhat criticized as they pose a threat to basic right to
privacy (Caine et al. 2005).  De Silva et
al, developed another system which used multimedia sensors to identify
activities like falling, walking, standing and shouting. This sort of data was
typically processed using two activity recognition models, a model for
processing the audio data and another for processing video data. They achieved
an overall accuracy of 94.44 % for video data and 83.35 % for audio data (De
Silva et al. 2008). 

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