bluetooth 4.0 Bluetooth 4.0 has been officially certified for release. The Bluetooth 3.0 technology was all about high energy with the introduction of WiFi transfer, Bluetooth 4.0 takes things down a notch by certifying single-mode low energy devices in addition to dual-mode devices that incorporate both the low energy side of the spec plus either 2.1+EDR or 3.0. What this means is that the technology...