| Id |
Subject |
Object |
Predicate |
Lexical cue |
| T21 |
0-151 |
Sentence |
denotes |
There are many ad hoc Internet of COVID-19 solutions for combating the COVID-19 pandemic that use various sensor-based technologies [7,10,11,12,13,14]. |
| T22 |
152-292 |
Sentence |
denotes |
An important way to evaluate and limit the spread of COVID-19 using the IoT is through the use of digital contact tracing solutions [14,15]. |
| T23 |
293-564 |
Sentence |
denotes |
Digital contact tracing uses various combinations of close-range, proximity-based sensing technologies, such as smartphones, wearables [16], Bluetooth Low Energy (BLE) beacons [14], and positioning-based solutions [17] that use anonymous or randomly coded locations [11]. |
| T24 |
565-634 |
Sentence |
denotes |
Regardless of the choice of technology, they all share the same goal: |
| T25 |
635-843 |
Sentence |
denotes |
To identify and inform those who may have been exposed to the COVID-19 virus, or those who are in the high-risk category, so that they can take appropriate actions such as isolation, care, and treatment [18]. |
| T26 |
844-972 |
Sentence |
denotes |
In addition to contact tracing apps, ongoing effort is being made to monitor post COVID-19 measures using the IoT [10,11,12,13]. |
| T27 |
973-1246 |
Sentence |
denotes |
However, these ad hoc IoT solutions are unable to interoperate with each other as they are developed using different sensors, data models, communication protocols, and applications without any interoperable way to interconnect these heterogeneous systems and exchange data. |
