Cellfire, a Silicon Valley startup, is looking to change the way you use coupons – no more clipping them out of the paper. Once you download a wallet-type application onto your phone, coupons will arrive according to your zip code. You can scroll through to see what you have at any time. When you find one you like all you have to do is press “Use Now” and show the screen of your phone to the cashier and they can enter a code to get you the discount. Bath & Body Works and T.G.I. Friday’s are among the first to sign up.