I love stuff like this.
Often films and TV shows have anachronisms in them (like the very first episode, IIRC, of Narcos with the clearly very modern touchscreen photocopier where the screen has been covered with a piece of paper, or the BMW that wasn't released until the mid/late 1990s), but every so often you'll see something that is instead a flash of the future.
Due to #reasons I watched the sentry gun scene in Aliens for the first time in decades the other day. This scene only appears in the director's cut of the film. Anyway, bearing in mind it was released in 1986, imagine my utter shock when Hicks busts out a couple of laptops to monitor and manage the guns. The machines in question are a pair of GRiD Compasses, originally released in, I think, 1984. Imagine that: a laptop computer from 1984. They're not even that big and cumbersome.
Of course, the specs are laughable by today's standards but actually pretty decent for the period, and especially for portables. In terms of memory and raw CPU power they'd certainly have wiped the floor with the average home computer of the day, although graphics capabilities might have been non-existent, and sound would have been PC speaker at best.
So, yeah, Nedry with a tablet? I can buy that. His whole den/lair is like a toy box of the coolest hardware and software from the early 1990s. But for all the times I've seen the film, I've never spotted this before.