Digital jewelry is fashion jewelry that contains embedded computing components like microphones, displays, and batteries. A prototype was developed that divided a cellphone's components into different jewelry pieces that would work together wirelessly using Bluetooth, with speakers in earrings, a microphone in a necklace, and an LED display on a ring to identify callers. The Java Ring was another prototype - a stainless steel ring with a computer chip that could unlock doors and log into computers when placed on a reader. Digital jewelry aims to make computers compatible with the human form by integrating them into accessories.