To see the benefit of this invention, we have to take a broader view. Ford notes that technology already exists to allow puddle lighting systems to convey more than just an automaker’s logo. Kia has even begun work on a customizable puddle light system that can shine just about any projection you like.
With that in mind, Ford puddle lights could provide valuable information, such as the temperature of the cabin, the fuel level (or remaining charge), or something more. In parts of Europe, Tesla has been battling privacy concerns over Sentry Mode, and a projection could inform surrounding individuals that the cameras are activated.
These are just a few potential uses, but we’re sure Ford has thought of several more applications. This patent lays the groundwork for those applications, and when Ford is ready, its puddle lighting will be more vibrant, more legible, and more useful than anything currently on the market. If, in the end, the system is no more practical than today, at least it will do a better job of marketing the brand, day or night.