This would most likely be used by vehicle owners to protect themselves from getting caught by MMDA people during coding days. http://custompinoyrides.com/2009/11/...e-plate-cover/
I would prefer to use a polarized plate cover that would let the plate be seen head-on but would be black when seen from a high angle (traffic cam) or from a side angle (MMDA).
I like the plate switcher of The Transporter better.