Parking Sensor
 

Hello,

I have intention to install on the back bumper of my car a sensor that detects the obstacles; the last time I was reversing I did 250 $ of damage, therefore sailing on internet I found two typologies of sensor: one with four ultrasonic transducers, and another with only an aluminium tape. Owing to the fact that I have not intention to do holes on my bumper I would prefer the second invisible solution. For this reason I wish ask first a your opinion.
Here is the link of the producer: http://www.proxel.com

Waiting for anybody who can give me an answer.

Bye!