Aria alerts you of incoming calls

How many times have you missed a phone call simply because it was on silent mode, and even then, the vibration that emanates from it just isn’t powerful enough? The Aria concept could very well change that – it will interact with your skin receptors with various patterns of touch, where half a dozen audible events in the home will communicate to the user of the band via various pressing patterns. What technology would work best with this – Bluetooth?