The invention contemplates a copolymer which is a graft or block copolymer useful to change wettability and surface characteristics of biological surfaces. The base is provided on a side wall with two terminal recesses, in which two connecting terminals are disposed. Then, the vehicle authenticates the first communication message via its secure credentials. In some aspects the ranging signal may comprise a random, pseudorandom, or deterministic sequence. The arm is fixed to and intersecting the rotation axis portion. The measuring device detects the object in the space if at least one part of the distance pattern remains constant over time.