It has its limitations but the fact is that if an airplane goes down in a remote area, somebody needs to know that, so the ELT is what we have. There are other technologies, such as SPOT trackers and other devices—I don't want to use model names—that some people have purchased, and that can provide advice in the event of an aircraft accident, but they don't necessarily meet the crashworthiness standard, so there's an issue there, and not everybody has them.
On May 23rd, 2018. See this statement in context.