1. “Unobtrusive Health Monitoring in Private Spaces: The Smart Home”
by Ju Wang, Nicolai Spicher, Joana M. Warnecke, Mostafa Haghi, Jonas Schwartze and Thomas M. Deserno
Sensors 2021, 21(3), 864; https://doi.org/10.3390/s21030864
Available online: https://www.mdpi.com/1424-8220/21/3/864

2. “LoRa Communications as an Enabler for Internet of Drones towards Large-Scale Livestock Monitoring in Rural Farms”
by Mehran Behjati, Aishah Binti Mohd Noh, Haider A. H. Alobaidy, Muhammad Aidiel Zulkifley, Rosdiadee Nordin and Nor Fadzilah Abdullah
Sensors 2021, 21(15), 5044; https://doi.org/10.3390/s21155044
Available online: https://www.mdpi.com/1424-8220/21/15/5044

3. “A Secure and Lightweight Authentication Protocol for IoT-Based Smart Homes”
by JiHyeon Oh, SungJin Yu, JoonYoung Lee, SeungHwan Son, MyeongHyun Kim and YoungHo Park
Sensors 2021, 21(4), 1488; https://doi.org/10.3390/s21041488
Available online: https://www.mdpi.com/1424-8220/20/14/4051

4. “Deployment Strategies of Soil Monitoring WSN for Precision Agriculture Irrigation Scheduling in Rural Areas”
by Laura García, Lorena Parra, Jose M. Jimenez, Mar Parra, Jaime Lloret, Pedro V. Mauri and Pascal Lorenz
Sensors 2021, 21(5), 1693; https://doi.org/10.3390/s21051693
Available online: https://www.mdpi.com/1424-8220/21/5/1693

5. “Energy-Efficient Clustering Multi-Hop Routing Protocol in a UWSN”
by Nhat-Tien Nguyen, Thien T. T. Le, Huy-Hung Nguyen and Miroslav Voznak
Sensors 2021, 21(2), 627; https://doi.org/10.3390/s21020627
Available online: https://www.mdpi.com/1424-8220/21/2/627

6. “WSN-SLAP: Secure and Lightweight Mutual Authentication Protocol for Wireless Sensor Networks”
by Deok Kyu Kwon, Sung Jin Yu, Joon Young Lee, Seung Hwan Son and Young Ho Park
Sensors 2021, 21(3), 936; https://doi.org/10.3390/s21030936
Available online: https://www.mdpi.com/1424-8220/21/3/936

7. “An Enhanced Indoor Positioning Algorithm Based on Fingerprint Using Fine-Grained CSI and RSSI Measurements of IEEE 802.11n WLAN”
by Jingjing Wang and Joongoo Park
Sensors 2021, 21(8), 2769; https://doi.org/10.3390/s21082769
Available online: https://www.mdpi.com/1424-8220/21/8/2769

8. “ECS-NL: An Enhanced Cuckoo Search Algorithm for Node Localisation in Wireless Sensor Networks”
by Vaibhav Kotiyal, Abhilash Singh, Sandeep Sharma, Jaiprakash Nagar and Cheng-Chi Lee
Sensors 2021, 21(11), 3576; https://doi.org/10.3390/s21113576
Available online: https://www.mdpi.com/1424-8220/21/11/3576

9. “Development and Implementation of a Hybrid Wireless Sensor Network of Low Power and Long Range for Urban Environments”
by Juan Bravo-Arrabal, J. J. Fernandez-Lozano, Javier Serón, Jose Antonio Gomez-Ruiz and Alfonso García-Cerezo
Sensors 2021, 21(2), 567; https://doi.org/10.3390/s21020567
Available online: https://www.mdpi.com/1424-8220/21/2/567

10. “A Multi-Layer LoRaWAN Infrastructure for Smart Waste Management”
by David Baldo, Alessandro Mecocci, Stefano Parrino, Giacomo Peruzzi and Alessandro Pozzebon
Sensors 2021, 21(8), 2600; https://doi.org/10.3390/s21082600
Available online: https://www.mdpi.com/1424-8220/21/8/2600