[int_19h]

It's probably not that, but there's a sci-fi novel "The Age of the Pussyfoot" by Frederik Pohl, in which one of the key technologies is a device that everybody carries on their belt that is described thus:

> The remote-access computer transponder called the "joymaker" is your most valuable single possession in your new life. If you can imagine a combination of telephone, credit card, alarm clock, pocket bar, reference library, and full-time secretary, you will have sketched some of the functions provided by your joymaker.

The protagonist eventually finds out from personal experience that people who do not have those things (e.g. because they can't afford them) are basically social outcasts, not the least because they can't hold most jobs, or even look for one. But even beyond that, not having the device means that you aren't being tracked means that you can e.g. be murdered without much of a consequence. And so people who can't afford the real thing still shell out money for a mockup of a joymaker to carry on the belt, just so they aren't obvious targets.

The most interesting thing about that novel is that it was published in 1969, long before cellphones or "the cloud" were a thing. A rare case of a sci-fi author taking a contemporary hot bleeding edge tech (remote time-sharing terminals for mainframes) and correctly extrapolating it into the future. Pohl even gave a broadly correct timeframe when he talked about the novel:

> I do not really think it will be that long. Not five centuries. Perhaps not even five decades.