They wrote software to stabilize -- even though they were on a bus and maybe someone's holding their phone at an angle -- to stabilize the phone, process it, and you may know on your smartphone, when you type a password, the keys pop out a little bit, and they were able to use that to reconstruct what the person was typing, and had a language model for detecting typing.
他们编了一个软件来稳定 -- 即使他们在公车上 或是有人会把手机摆在一个特殊的角度 -- 来稳定这个手机，处理它， 你也许知道，当你在智慧型手机上输入 密码时，对应键会放大一点，因此他们可以 利用这一点去重组那个人所输入的东西， 还有一个语言模型去检测输入行为。