I have purchased an etag, it is still in it's box in the cubbyhole of my car.

i tried it for a while with my previous car and the amount of photos they take of your car, and the quality of photos they take, i cannot see that people will get away without paying. Every photo they take has a clear shot of your number plate and on most of the photos you can see the occupants of the car. If they can send you fines by taking a picture of your car and its number plate they should be able to do it using this system.

But as for me i will leave the thing in it's box and take the back roads. Will just need to leave a bit earlier in the morning.