Smartphones and IoT technologies are making our lives more convenient. However, security implications and the lack of adequate precision positioning technology meant their application in digital keys has been limited. These limitations were overcome with the application of UWB(Ultra-Wideband) and BLE(Bluetooth Low Energy) technology. UWB/BLE technologies can help enhance vehicle security systems and better locate the position of a device (or its user). Incorporated as smartphone apps, the digital key can lock, unlock, and start vehicles. Consequently, a race for digital keys has taken place across the ecosystem, from automotive OEMs to Smartphone manufacturers to parts suppliers. It follows the trend of IoT with high control connectivity, such as home appliances and smart home devices, following the ubiquity of smartphones. Global manufacturers are actively engaged in the mass production of digital key-applied vehicles, as well as expanding services to offer users various digital experiences.

Digital Key is an advanced connectivity technology that accurately determines the location of the smartphone held by the passenger, enabling vehicle door opening and ignition, key sharing, and welcome lighting. The UWB technology allows digital keys to locate smartphone users accurately to deliver various services and resolve fundamental issues such as vehicle theft through a relay attack.