The Bluetooth Special Interest Group has announced a new version of its wireless connectivity specification designed to improve secure connections with Internet of Things (IoT) in mind.
The update was badly needed. Just do a Google search for Bluetooth hacks and you’ll see how insecure the spec really is. With Bluetooth finding its way into cars and appliances, that kind of weakness was simply not acceptable.
In Bluetooth 4.2, most of the changes are in Bluetooth Smart, or Bluetooth LE, the low-power version of the technology used in smaller, low power devices, like wearables and smartphones. It also gained direct Internet access, rather than the usual BT device-to-BT device communications.