So in a physical channel, what you really want to have is something that customers can touch and feel because you're going to be out talking to them and while you could certainly go out with a PowerPoint deck with a photo of what the product's going to look like, etc., my advice always is invest a day or two in building something even if it's out of Styrofoam and cardboard or if it's something as small as a chip or a microphotograph or a microphotograph of a proposed die layout.