The only useful system would be operated by the facility. It would involve a server tracking the residents. It would feel somewhat like the Star Trek computer. Older efforts would have involved the resident carrying a card or pen that the system could ping (and such systems exist), but cards can be forgotten by residents, and existing designs can't tell which way the resident is looking, which is important for being able to give instructions like "turn around". Modern computer vision techniques might be up to the task, allowing tracking residents without need for a non-removable wrist strap, and could also give facing direction. A plus, from the facility's perspective would be faster detection of falls, for example. Control of many locally placed speakers permits targeting instructions. Control of indicator lights and/or monitors could assist in giving directions. Such a system could integrate with more invasive monitoring (pulse, breathing, etc.) for residents in worse shape. It would be a big project, and a potentially lucrative one for a supplier of medical aids, like GE or a lucky startup.
But there is no substitute for staff, and one possible "actuator" is informing staff that a resident appears to be wandering, distressed, or incapacitated.