All our IoT sensors comes with certificate that fulfills two functions. Firstly, the certificate assist with authenticating and verifying the identity of a Iot device. Secondly, it enables the encryption of information exchanged via a website or cloud. This will ensure that key data will not be leaked or exposed.
An SSL/TLS certificate is one of the most popular types of X.509 certificates, it can be a type of public key certificate which uses the X.509 standard. The certificates contain a public key and the identity of a host name or organization. Some of these certificates are self-signed. When a certificate authority (CA) signs them or another entity validates them, the certificate can then leverage on the public key to establish secure connections between our sensors and the cloud.
More information on Certificates :
https://www.techopedia.com/definition/29751/x509-certificate