Steven Wallace is a system innovation scientist at the Pentagon's Defense Information Systems Agency, or DISA. In an interview with The Washington Post, he discussed smartphone technology that the Pentagon is testing that will authenticate smartphone owners by using "the gait of your walk, the tension in your hand or the way your thumb moves across the touch screen." He says DISA is working with industry leaders such as computer chipmakers and smartphone developers to make the technology commercially available by 2020. The technology is expected to be incorporated into the majority of handsets in the USA as the Pentagon wants use mass production to lower the price. The sensors used by the DISA project are already in the smartphones and a "unique profile for how each smartphone user does various things" can be created based on how each owner uses their device. This may include the way the phone is pulled out of a purse or pocket, typing on it, or walking with it. A "risk score" is generated based on a weighted combination of metrics and if this score drops too low, the person is locked out of the phone. At that point the person has to use a more standard way to login such as a conventional password. Wallace hopes the cutting-edge identity verification system will be like the Global Positioning System and the Internet itself -- in that they are all tools that were initially developed for military use but ended up benefiting society at large. "I'm not going to say that we're going to create something that's as broad and as grand as GPS or the Internet, but there's a history of the department working on things and those things ending up in consumer devices," Wallace told me.