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Updated: May 20, 2026
04:13
Using a Real-Time Locating System to Measure Walking Activity Associated with Wandering Behaviors Among Institutionalized Older Adults
Published on: February 8, 2019
Improving safety and operational efficiency in residential care settings with WiFi-based localization
Finale Doshi-Velez1, William Li, Yoni Battat
1Massachusetts Institute of Technology, Cambridge, MA 02139, USA. finale@mit.edu
Summary
A WiFi-based localization system significantly reduced caretaker search time for residents by two-thirds. The system also provided effective outdoor alerts, enhancing resident safety in a skilled nursing facility.
Area of Science:
- Geriatric care technology
- Wireless localization systems
- Nursing home safety
Background:
- Caretaker time spent searching for residents is a significant operational challenge in skilled nursing facilities.
- Ensuring resident safety, particularly preventing wandering outdoors, is a critical concern in long-term care settings.
Purpose of the Study:
- To evaluate a wireless network (WiFi-based) localization system for improving resident tracking.
- To assess the system's effectiveness in reducing caretaker search time for residents.
- To determine the system's capability in providing timely alerts for residents exiting the facility.
Main Methods:
- A controlled study was conducted over two 2-month periods in a skilled nursing facility.
- A WiFi-based localization system with devices on resident wheelchairs was implemented.
- Caretaker time to locate residents and the accuracy of outdoor alerts were measured.
Main Results:
- The localization system reduced average resident search time by approximately two-thirds (from 311.1 to 110.9 seconds).
- The system generated 44 resident searches and 215 outdoor alerts during the study.
- Outdoor alerts demonstrated a 9.1% false-alarm rate and a 1.7% false-negative rate.
Conclusions:
- Timely resident location information significantly improves operational efficiency and resident safety.
- WiFi-based localization offers a potentially inexpensive solution for facilities with existing wireless infrastructure.
- Further research is recommended to validate the system's effectiveness in diverse healthcare settings.
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