Can I put a smart lock slogan on the car?

It can be posted.

As long as it does not affect the operation of the vehicle and does not significantly change the appearance of the vehicle, it does not matter. However, you cannot paste slogans on the rearview mirror and rear glass, nor can you cover the entire vehicle with slogans. The original appearance of the car is not visible.

You can stick the smart lock slogan on the car without affecting your driving operation. However, things posted are generally difficult to clean in the end, so it is not recommended to post slogans.