deficient inclusion

DETECT'CHUTE CLINIBED is a smart carpet equipped with several sensors. Positioned at the foot of the bed, this system allows detecting i) patient fall out of the bed and ii) when patient is not back to bed after a certain time. When one of these two events is detected, the system then sends a short message syteme (SMS) and/or an email to the medical staff. The aim of this clinical study is to test the system ability to detect and transmit alarms for both those events.

In this clinical trial, the investigators will therefore test the alarms positive and negative predictive values for both the events.

Inclusion Criteria:

• residents of the facility free to get up at night (without a barrier)
• residents may or may not be suffering from Alzheimer's disease or related illness.
• having fallen several times in the last 12 months and / or at risk of falling (time up and go test ≥ 20 seconds).

Exclusion Criteria:

• Subject under tutelage
• use of night barriers or other forms of physical restraint deemed necessary by the physician in charge of the unit care or the patient
• Refusal of the resident's relatives.