“…Independence & secure living [22, 23, 25, 27, 29, 31-40, 42, 45-47, 49, 50, 51] [ 22-30, 32-40, 45-51] Wearable device 11 Movement recognition 6 [23,24,28,31,36,41,43,44,48,51,52] [ 29,31,36,42,51,52] Activity tracker 3 Algorithm 3 [25,29,47] [ 33,43,44] Non-wearable device 2 Location tracking 2 [42,52] [ 28,41] The sum of n per category could exceed or not reach 31 as papers can be classified in multiple sub-categories or none if the item was not reported.…”