Data Pad: The slate, a once ubiquitous accessory before the advent of the fob terminal, the wearable, and the neural lace, and still quite common because it’s useful to pass data around (of course, smart paper does just as well for this, but…). Also, people kind of like working with their hands.

Also note that this is a way to share one or more documents on one person’s device among multiple people having a coffee together, not a stack of one-document-per-device data pads ending up in in-trays, this not being Star Trek:

Seriously, this is the dumbest thing ever committed in television SF. Except possibly the baryon sweep, or the temperatures a couple of hundred degrees below absolute zero, or the cutting of holes in an event horizon, or… well, okay, those were all bad science. This is just total fail of common sense.