| Acronym | Meaning |
| GPS | Global Positioning System |
| HAR | Human Activity Recognition |
| NLR | Narrative Literature Review |
| PRISMA | Preferred Reporting Items for Systematic Reviews and Meta-Analyses |
| PHQ | Patient Health Questionnaire |
| UCLA | University of California, Los Angeles |
| EMA | Ecological Momentary Assessments |
| Wi-Fi | Wireless Fidelity |
| ML | Machine Learning |