Abstract: A computer includes a processor and a memory, the memory stores instructions executable by the processor to generate obscured received data from received data by applying at least one Boolean operation to the data and to transmit, via a first communications channel, the obscured received data to a second computer. The executable instructions are additionally to transmit, via a second communications channel, a key to the second computer.

Abstract: A computer, including a processor and a memory, the memory including instructions to be executed by the processor to receive an emitted polarized light beam at a lidar receiver that determines a polarization pattern and a distance to an object, wherein the polarization pattern is determined by comparing a linear polarization pattern and a circular polarization pattern and identify the object by processing the polarization pattern and the distance with a deep neural network, wherein the identity of the object can be metallic or non-metallic. The instructions can include further instructions to operate a vehicle based on the identified object.

Abstract: A computer, including a processor and a memory, the memory including instructions to be executed by the processor to receive an emitted polarized light beam at a lidar receiver that determines a polarization pattern and a distance to an object, wherein the polarization pattern is determined by comparing a linear polarization pattern and a circular polarization pattern and identify the object by processing the polarization pattern and the distance with a deep neural network, wherein the identity of the object can be metallic or non-metallic. The instructions can include further instructions to operate a vehicle based on the identified object.