Many companies have created various kinds of sensors to help those who are at different stages of Alzheimer's. Sensitive to the privacy of these people, these sensors keep track of what is happening and relay them to the family or a doctor. Knowing that they are being monitored gives the patients a feeling of security. These sensors are not a replacement for personal caregiving, but it makes it easier and more manageable for caregivers.
http://edition.cnn.com/2014/08/25/tech/innovation/alzheimers-smart-home/index.html?hpt=hp_c5
