IoT, AI and the signals can be encrypted and used only by those who have the keys.
IoT signals, by themselves, are problematic to encrypt because there is practically nothing. Another thing is if they are annotated with structured texts, that is AI technology is used. For example, the IoT signals can be annotated by instructions, manuals, descriptions, etc. That is, there is a volume of patterns that is unique, can be encrypted and used only by those who have the keys.