.
Ian, I agree it's unlikely but bad people nick your plate and stick it on another vehicle to confuse Police ID of the vehicle they are using in a crime.
I'm just playing devil's advocate and pointing out the downside of using velcro (and magnets) rather than advising not to use it. I chose not to use velcro for mine, especially after nicking and repositioning someone else's velcro attached plate for a joke.
