camera phones and unauthorized pictures

[TerraFrost]

as camera phones (and pda's with camera's built in) become ever more prolific, the easier it is for unauthorized pictures to be taken. here's a good example of what kinds of pictures might qualify as unauthorized ones:

http://www.stuff.co.nz/stuff/0,2106,3117337a10,00.html

so, anyway, what do you think should be done about this, if anything?

[tsian]

If you are in public place, it is reasonable to be subject to most pictures