Wireless Sensor Networks (WSN) 'current Authentication Centralised Cryptography Energy utilization Environmental monitoring Geostatistical maps Geostatistics Internet of thing security Internet of things Inverse Distance Weighting (IDW) IoT security Key-exchange LPWAN Low power electronics Low powered wide area network Modular sensor node Network security Network standards Network transmission Ordinary Kriging (OK) Precision Agriculture (PA) Radial Base Function(RBF) Session key Soil pH Spatial Interpolation Spatial variability Surface mapping Introduction Transmission standards