> "Moreover, if law enforcement were required to engage in live surveillance without the aid of technology in this type of situation, then the advance of technology would one-sidedly give criminals the upper hand. The law cannot be that modern technological advances are off-limits to law enforcement when criminals may use them freely."

Nobody said you can't use webcams for surveillance, just that you need a warrant because that's how the law works.

At least, that's how the law is supposed to work.