How to Resist the Wave of Malign Mimicry

When it gets to the point that it's real time and somebody can say, all right, I am going to mimic the president's voice. That is when all kinds of scams with a conversation that's happening in real time can occur. What can and should we be doing, if anything, to resist the inevitable wave of malign mimicry that is just inevitably going to happen? We're working on a digital watermarking tool, is that right? And at some point Moore's Law will continue to kick in.