Sliding a finger along a printed bar turns the volume up or down.

沿着打印的条滑动手指可以调高或调低音量。

Among other efforts, they propose affixing vehicles operated by Uber, Lyft and other ride-share services with a printed bar code, so passengers can confirm their vehicles by matching the code to one sent to their phones.

其中，他们提议将优步(Uber)、Lyft和其他拼车服务运营的车辆贴上打印的条形码，这样乘客就可以通过匹配发送到手机上的条形码来确认自己的车辆。