Multilevel controlling of Informative systems by QR-codes

Any modern information system in its architecture implies the need to provide multilevel access to data. Existing mechanisms of customer interaction are oriented to users working with desktop computers and it is quite inconvenient to distribute mobile devices. The present work is presented by our protocol created by providing a security layer in the standard QR code and creation of comfortable conditions for the user. Theoretical and practical realization of this protocol is described on the basis of Application on Android Operating System, which can be used in components of smart buildings or smart cities.