Handphone

Constant fiddling with your handphone sends a message. (Both literally and not literally hahaha)
Of course, first to the person we're all trying to find out - whose feet is nervously tapping away, waiting for your SMS.

Second, to the people around you. An air of unfamiliarity, distance and anti-socialness lingers. The smell is distinct and distracting. Eyes are interlocked, opening windows for soul-to-soul interaction. But yours is fixed on a small LCD. Your head is tilted down and you close your curtains on the world around.
Long, black curtains.