Samsung Wallet on ID. ERA 9X: What's Missing for Digital Key Engineering Rollout?

According to public data, in 2024, the penetration rate of car models equipped with digital key features in the Chinese market exceeded 15%, but less than 5% of models have truly achieved the complete closed-loop experience of "seamless locking/unlocking." Samsung Wallet's recent adaptation for the Volkswagen ID. ERA 9X supports seamless door opening/closing and vehicle startup. On the surface, it looks like just another phone brand joining the automaker ecosystem, but the engineering details involved are far more complex than the two words "supports" suggest.