Your answer is: Many people now use the internet on the go as part of their work.
Workers can access email and the internet using a mobile device such as a laptop, mobile phone or PDA.
If the police had no warrant saying they could go in or search Joe's house then the police could be in a certain amount of trouble as well seeing as Joe did not willingly let them in and they never had a warrant but Joe could be in a lot more trouble for being in the possession of drugs.
And smart homes should be more advanced to these kinds of things because they could have been fake cops, plus they had no warrant which leaves everyone in this situation at fault especially Joe for being in the possession of drugs and the possible false 911 call influenced on drugs either making him see things or think things, maybe even both.
