1. WHO Coronavirus (COVID-19): World Health Organization, March 2022. https://covid19.who.int/
2. Mbunge, E., Akinnuwesi, B., Fashoto, S.G., Metfula, A.S., Mashwama, P.: A critical review of emerging technologies for tackling COVID-19 pandemic. Human Behav. Emerg. Technol. 3(1), 25–39 (2021)
3. TDRA: The Al Hosn app. TDRA, 21 September 2021. https://u.ae/en/information-and-services/justice-safety-and-the-law/handling-the-covid-19-outbreak/smart-solutions-to-fight-covid-19/the-alhosn-uae-app
4. Tawakkalna: Kingdom of Saudi Arabia. https://ta.sdaia.gov.sa/en/index
5. Tracer, N.C.: Protect yourself, your Whānau, and your community. https://tracing.covid19.govt.nz/