This document discusses digital jewelry, which is fashion jewelry with embedded intelligence and computer components. Digital jewelry could replace items like driver's licenses and credit cards. Components like microphones, displays, and antennas could be embedded in jewelry pieces like necklaces, earrings, bracelets, and rings. For example, a necklace may have a microphone, earrings could have speakers, and a bracelet could have a small display. The document also discusses the Java Ring introduced in 1998 as an early example of a smart ring. While digital jewelry could provide convenience, challenges remain regarding small displays, potential health effects, waterproofing, and cost.