The CheckApp mobile application was created by the e-Government Development Center to check vaccination and immunity certificates. Through the application, the relevant authorities will check the vaccination and immunity certificates of citizens in public catering establishments, hotels, large shopping centers - indoors. The authorized person who downloads the application to the phone can check whether the citizen has a vaccination or immunity certificate by reading the QR code of the vaccination or immunity certificate or by entering the identity card information. You can get acquainted with the rules of use of the application in the instructional video: https://youtu.be/VlaMC2J2qTk Note that, according to the Resolution of the Cabinet of Ministers of the Republic of Azerbaijan No. 229 of July 26, 2021, from September 1, 2021, over 18 years old Persons with disabilities can use the services provided in public catering establishments, hotels, large shopping centers only in the presence of vaccination and immunity certificates. In addition, all persons over the age of 18 studying at higher and secondary vocational education institutions are required to have vaccination and immunity certificates.