translation.en: In our trials on over two and half thousand people, the smartphone with the add-on clip is comparable to a camera that is hugely more expensive and hugely more difficult to transport.
translation.zh: 我们的实验覆盖了 超过2500人， 连接了这个硬件的手机 和比它昂贵数倍， 并且难以运输的检测机 质量相近。