Development biometric IoT access control system for employees at the example of KazPost branch. - R. K. Uskenbayeva; A. A. Kuandykov; A. A. Kuatbayeva; A. B. Kassymova; G. K. Kuatbayeva; B. K. Zhussipbek; Zh. Khamzina (CBI (2), 2021)