I'm saying that the technology is there that allows you to identify somebody through their voice. If I'm not mistaken, I think some jurisdictions might be using that, maybe not in Canada, maybe elsewhere, but these are possibilities. You phone at a certain time and the individual has to answer, and you verify that it is in fact that person at the end of the line, and that line is in this location, so you know.
On February 14th, 2012. See this statement in context.