I.DAC - Concept Art (Patreon)

Here are some of Katsu's original I.DAC (Intel & Data Aid Communicator) bracelet designs. 

Design "4" was ultimately chosen due to its sleeker "tech-based" appearance. Each I.DAC is equipped with a miniature microphone, offering direct contact with PCPD headquarters at all times. It's also able to provide real-time holographic displays of criminals, maps, and weapon schematics.