Energy & Sustainability See Inside Street Talk: What Innovations Would Make Cities More Livable? What innovation—technological or otherwise—would make any city a substantially more livable place? We put this question to urban leaders and our own readers. Here's what they said By Michael Easter and Gary Stix Scientific American Cell-Phone Paradise Communication is at the heart of the future. A future city would need to respond to people on a personal level. Our cell phones can become devices that are able to open the door to our home, pay for our bus and subway charges, make purchases at any store with a tap and a password, and give us unfettered access to the Internet. This is only a preview. Get the rest of this article now! Select an option below: Buy Digital Issue Customer Sign In *You must have purchased this issue or have a qualifying subscription to access this content It has been identified that the institution you are trying to access this article from has institutional site license access to Scientific American on nature.com. Click here to access this article in its entirety through site license access. ADVERTISEMENT Scientific American is a trademark of Scientific American, Inc., used with permission © 2015 Scientific American, a Division of Nature America, Inc. All Rights Reserved.