When the Galaxy S21 series was released in January this year, Samsung stated that the mobile phone will have a digital key and smart home function. After about 8 months, the digital key function was finally officially launched yesterday. Samsung announced that it will add a digital key function to the Galaxy S21+ and S21 Ultra through the October Android security update. Car owners can add the digital car key to the Samsung Pass of the mobile phone. The car manufacturers that support Samsung Pass include BMW, Audi, Genesis and Ford. The owners of the corresponding car models only need…