No but they can take to their facility and x-ray your car, which will show anything you are hiding.
An officer of the Border Patrol will inspect your cargo.
radar
In "Crossing" by Gary Paulsen, the U.S. border patrol deploys various strategies to try to keep illegal Mexican immigrants out, such as setting up checkpoints, increasing patrols, and using technology like drones and sensors. The novel follows the journey of a young boy attempting to cross the border and the challenges he faces in evading these measures.
While every country had radar, Great Britain was the leader in using radar technology, especially for military purposes.
The development of radar helped detect underwater submarines.
If you use the Poke Radar you will have a chance of getting a shiny Pokemon. But the actual Pokemon will not USUALLY change by using the Poke Radar.
route213 using poke radar
God uses a sin radar to detect people who do sins
Tornadoes are tracked using eyewitness reports and Doppler radar, which can detect wind and rotation in a thunderstorm.
Terrestrial radar, using over-the-horizon techniques, around 3000~5000 km. Astronomical radar, at least as far as Venus.
Francis James Wylie has written: 'The use of radar at sea' -- subject(s): Radar in navigation 'Choosing & using ship's radar' -- subject(s): Radar in navigation
Any Pokemon that are in the area that you are using it.