From The Diamond Age by Neal Stephenson:
You could get a phantascopic system planted directly on your retinas, just as Bud’s sound system lived on his eardrums. You could even get telaestetics patched into your spinal column at various key vertebrae. But this was said to have its drawbacks: some concerns about long-term nerve damage, plus it was rumored that hackers for big media companies had figured out a way to get through the defenses that were built into such systems, and run junk advertisements in your peripheral vision (or even spang in the f….... middle) all the time—even when your eyes were closed. Bud knew a guy like that who’d somehow gotten infected with a meme that ran advertisements for roach motels, in Hindi, superimposed on the bottom right-hand corner of his visual field, twenty-four hours a day, until the guy whacked himself.
