Not sure if this is well known. I was playing round with a video clip I found on You Tube the other day with the intention of making an animated avatar. The clip was of a cobra being naughty......well just doing the things a cobra does, as they do.
In the You tube clip the number plates (tags) had the obligitory pixilation/screening in place. When I put the clip into a video editor I was surprised to discover the pixilation gone with the rego numbers in full view.
Sooooh..........probably worth considering how you edit the number plate out if you are going to upload some pics or video.