Actually, this was covered last night on Mythbusters. The infrared LEDs did nothing to disturb the LIDAR. Of course, I don't think they checked the exact wavelength of either the LIDAR or the LEDs. I'd imagine there is a pretty good filter on the LIDAR that rejects anything not modulated just right. And yes, tampering with bits of your car like that can be illegal depending on where you live. Josh -- A common mistake that people make when trying to design something completely foolproof is to underestimate the ingenuity of complete fools. -Douglas Adams On Mon, 24 Jan 2005 16:14:21 -0500, Herbert Graf wrote: > > Is there a ban on ir leds mounted on the number plates ? ;-) If so I > > haven't heard of it. > > In most areas it is illegal to purposely interfere with police speed > measuring devices. If you can come up with a completely legitimate and > believable reason that you needed IR LEDs on your plate you MAY get away > with it. OTOH you may not, and end up in BIG trouble. -- http://www.piclist.com PIC/SX FAQ & list archive View/change your membership options at http://mailman.mit.edu/mailman/listinfo/piclist