Abstract
Ⅰ. Introduction
Ⅱ. Conceptual Model
2.1 Task Characteristics
2.2 Task-Technology Fit
Ⅲ. Data Collection and Analysis
Ⅳ. Analysis and Results
4.1 Cost
4.2 Privacy
4.3 Implementation(Ease of Use)
4.4 Locatability
4.5 Compatibility
4.6 Standardization
Ⅴ. Discussion