@hnade: "could some kind soul recommend a place to buy a reverse distance sensor?
what brand?
assume location US
am driving a longbed truck and finding it difficult to estimate when rear 
bumper is near concrete wall (we are required to reverse into designated 
parking slot)
something like this place ? (please suggest alternatives)
<url>"
    @Fake: "<quote>
I believe we call them obstacle detection or object detection.  Maybe 
you can get better search hits with that term.
Thank you,
"Then said I, Wisdom [is] better than strength: nevertheless the poor 
man's wisdom [is] despised, and his words are not heard." Ecclesiastes 9:16"
    @adr5: "says...
<quote>
I have a similar set up in my T&C, and it is pretty worthless.  It stops giving 
you distance readings when you get to a foot or less.  I can easily do a visual 
estimate to within a foot.  I need the help when I am getting under a foot.  I 
would rather have a camera back there. 
-
Alex"
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