Eventually almost everything will become interconnected.
http://arstechnica.com/information-technology/2014/01/the-case-for-wi-fi-in-the-internet-of-things
http://www.imore.com/usb-vs-bluetooth-vs-wi-fi-whats-best-way-tether-your-mac-your-iphone-or-ipad
Ideally, multi-port interconnected is the way to go.
http://www.engineersgarage.com/contribution/difference-between-bluetooth-and-wifi
However, wireless data transmission keeps improving.
http://www.diffen.com/difference/Bluetooth_vs_Wifi
http://www.pcworld.com/article/208778/Wi_Fi_Direct_vs_Bluetooth_4_0_A_Battle_for_Supremacy.html
http://en.wikipedia.org/wiki/Internet_of_Things#Large_scale_deployments
"Baer explained that businesses want connectivity so they can track data on how products are used, or update features over the air. So even if the microwave doesn’t need an app, it may need Wi-Fi. And Broadcom really wants to sell that Wi-Fi chip."
https://gigaom.com/2013/05/29/zigbee-and-z-wave-are-out-broadcoms-new-chips-bet-on-bluetooth-and-wi-fi-for-iot
http://en.wikipedia.org/wiki/Internet_of_Things#Intelligence
http://en.wikipedia.org/wiki/Biochip#History