Small enough to pass off as a lipstick (or a chapstick for you guys), the device is discreet enough for you to quickly hop into a quiet corner, check for directions and make your way forth.

• 小巧的足以被误认为是口红（小伙子的话就是唇膏啦），这款仪器毫不显眼，足以让你快速闪进一个安静的角落，查看方向找到前进路线。