I've only really delt with high end stuff, lots of $$$$.
You could try something similar to this http://www.jaycar.com.au/productView...UBCATID=1034#5
It may be over kill, it might not. Your only issue is about the idetification, the cameras might not be up to it.
If you have a Jaycar near you they normaly have samples running, just go and have a look.