Due to the technical requirements, CALED will not be installed in all elderly housing facilities at Sundhedshuset, Albertslund, Denmark, limiting the number of participants receiving the intervention to 24. CALED will be installed in the residents rooms/flats and in the common areas. Residents accepting participation will comprise the following (numbers are the maximal possible): 15 elderly with frailty receiving CALED as an intervention, 9 people with dementia receiving CALED as an intervention, and 15 elderly with frailty not receiving CALED during the trial as a control group (Group 3).