This is an interesting site/security tool it checks Shodan to find if you have IoT devices that are publicly accessible on the internet.
Internet of Things Scanner
iotscanner.bullguard.com
Just checking open ports as far as I can see.
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What iotscanner.bullguard.com does is puts in a request to www.shodan.io search engine for the IP that your coming from, you could do the search your self on shodan this site just simplifies the process. As it pulls information from a search engine and peoples IP?s change. . . . .