That is your device. Everyone ends up with one upon their arrival here. It works like a smartphone, really - you can send private messages, make posts on the network, call specific people, take video, photos, et cetera.

[ Eames waves a hand, briefly, before turning back to the mugs, checking the darkness of the tea. Satisfied, he adds half of the cup's volume in milk to Yusuf's (he could swear Yusuf and Arthur are born of the same ilk who put too much of anything into something they should just let be), a smaller dash to his own. Yusuf's cup gets passed off to him before he begins searching for the honey for himself. ]

It has the uncanny ability to turn itself on, on accident, however, so if the LED light turns on when you'd rather it not- well, should cut it out right away.