&gt; &quot;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.&quot;<p>Nobody said you can&#x27;t use webcams for surveillance, just that you need a <i>warrant</i> because that&#x27;s how the law works.<p>At least, that&#x27;s how the law is <i>supposed</i> to work.