A recording of a child's voice may be collected without parental consent only if it does nothing more than stand in for written words (a search, a verbal instruction or speech-to-text), kept only for the brief time that purpose needs, and clearly noticed together with the deletion policy; the exception does not apply where the voice request would collect PID such as a name.
The graph holds this control, the 0 it maps to, and the evidence behind each claim, over MCP and REST.