CCC Digital Key Explained

A practical, engineer's-eye guide to CCC Digital Key — the cross-industry specification that turns a smartphone into a car key. This series covers what the spec actually defines, how UWB and BLE work together inside it, the authentication flow step by step, how CCC relates to FiRa, what's changing in Digital Key 4.0, and which OEMs have adopted it and why. Written from the perspective of someone who spent two years managing a CCC Digital Key certification program between an OEM and Tier 1 suppliers — the parts you won't find in the spec sheet included.