Computers will be tiny and embedded in clothes and jewelry

Ray Kurzweil : writer, futurist
Individuals primarily will use portable computers, which have become dramatically lighter and thinner than the notebook computers of ten years earlier. Personal computers will be available in a wide range of sizes and shapes, and commonly embedded in clothing and jewelry such as wristwatches, rings, earrings, and other body ornaments. Computers with a high-resolution visual interface range from rings and pins and credit cards up to the size of a thin book.

Kurzweil, Ray. 1999. The age of spiritual machines: when computers exceed human intelligence. New York: Viking.