A node and methods for securely communicating information are described. The node includes a transducer that provides a first stream of data elements, a network interface, and a microcontroller. The microcontroller identifies a first data type associated with the first stream of data elements from the transducer, harvests each data element (e.g., measurement) from the first stream of data elements based on the first data type, aggregates a plurality of the measurements into an array of first measurements, generates a payload that includes a length identifier, a data type identifier that identifies the first data type, and the array of first measurements, identifies a destination for the payload, determines a token based on the identified destination, adds the identified token to the payload to form a datagram; and sends the datagram to the destination, via the network interface.