“…Technological advances in recent decades have resulted in smaller and less intrusive monitoring devices that are suitable for use in daily life, as well as efficient algorithms that are able to deal with complex and large datasets. The technologies most commonly used to monitor and engage the elderly are computers [ 21 ] and mobile devices [ 9 , 20 , 22 , 28 , 35 ], wearable sensors [ 10 , 23 , 36 , 37 , 38 ], ambient sensors [ 18 , 23 , 24 ], virtual reality systems [ 15 , 17 , 25 ], and robots [ 8 , 39 ]. The monitoring of the elderly includes two areas: the monitoring of the body [ 10 , 15 , 21 , 37 , 40 ] and the monitoring of the mind [ 9 , 15 , 25 ].…”