TABLE 2. Strength and Limitation Analysis With Other Proposed Methods.

Model	Major Strengths	Major Limitations
Broadcast	•No public adoption issues •User’s privacy is protected •Mostly accessible by all	•Significant privacy risk for Covid-19 carriers •Data accuracy issue •High risk of misinformation and mass panic
Selective Broadcast	•Moderate privacy risk for COVID-19 carriers •Mass panic may be limited	•Data accuracy issue •Risk of misinformation •Limited by technological requirements
Unicast	•Low risk of mass panic •Data accuracy is high	•No privacy for the user •Not helpful for the mass people
Participatory	•User’s privacy is protected from mass people	•There can be fraudulent activity •Mass user adoption is low •Full consent is needed from the COVID-19 carrier
Private Kit: Safe Path	•Overall accuracy is high •Moderate to low privacy risk for the COVID-19 carrier.	•Limited by technological requirements •Full consent is required from the COVID-19 carrier
Proposed Solution	•High accuracy of location data •Users’ cell phones must not be smartphones rather any phone with an active sim card. •To collect the data, no user application is needed •Less false negative issue	•The user has to carry the cell phone