It is possible to start an emergency without signing the EULA by sending an SMS to the server containing a device id the user made up by themselves. However, if the user enters arbitrary device ids to the server, it is possible for them to hijack an emergency.
Maybe have the server send back a sort of key back to the user and further calls require that key? Then that would just be sending the emergency ID back to the user which I think is a bad idea.
It is possible to start an emergency without signing the EULA by sending an SMS to the server containing a device id the user made up by themselves. However, if the user enters arbitrary device ids to the server, it is possible for them to hijack an emergency.