i.d. >> the history of fingerprint sensors on notebooks isn't very good, but this is a different technology. until people have a chance to use it, that will be the big question. >> reporter: one of the best features? pricing. the new iphone 5s stays the same as previous models starting at $199 for the 16 gigabytes with a two-year contract. apple unveiled a new cheaper model, the 5c. it's made of plastic with a four-inch display, comes in a rainbow of colors -- green, white, blue, red, and yellow. the 16 gigabyte model is just $99 with a two-year contract. online reaction was mixed. one tweeter posted -- iphone 5c made from hard-coated polycarbonate, fancy name for cheap plastic. another asks, when can i get my fingerprints on this thing? the new iphones hit stores september 20g9. there's a lot of buzz online about the fingerprint sensor. in particular, zane arbor is here to take us through the details. what if you want someone else to access your phone, like your spouse, or you want to be able