here to tell us about it, cnnmoney.coming david goldman. great to see you. sounds like a pipe dream come true. please, tell us how this works. >> reporter: it's really unbelievable, because you said it. you're taking all of the components of a cell tower and putting it into a device that's just the size of a rubik's cube that fits in the palm of your hand. what it does, it allows companies like at&t and verizon and sprint to put these devices all over a city, so you can tutin a wall, on top of a lamppost, on a bus station. and instead of having these big cell towers that spread out signal in all different areas, you actually can direct these to send it up a road or down a -- another path, so that, you know, say during rush hour can you have them pointing in one direct, during rush hour going home, you can have it pointing in another direction. that way you're saving a lot of