Laser detectors are no good, as by the time the device detects a laser the police have already got your speed. They only work if there is someone is in front of you as they do pick up some laser scatter.
And as for the cameras, well if you can't read roadsigns and see bright yellow boxes, you shouldn't really be driving 
Just maybe you can concentrate more on your driving rather than looking out for Fu*kin Speed Cameras everywhere you go

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I use a Pogo Alert and its worth its weight in gold my licence is clean been driving for 20yrs

no I don't speed , but its so easy to go over 30mph in a gti .