Digital jewelry combines fashion accessories like bracelets, necklaces and rings with technology like Bluetooth, microphones and displays. This allows users to perform functions of mobile phones through jewelry pieces worn on different body parts. For example, a smartwatch bracelet can vibrate and flash to notify of incoming calls. Digital jewelry provides benefits like security, portability and memory storage but also has limitations like small displays, potential harm from rays and high costs. Overall, digital jewelry is merging the physical and digital worlds and may eventually allow technology to become integrated into the human body.