European start-up Relayr believes that its WunderBar, a hardware kit comprised of seven smart modules, could provide app developers with the toolbox to bring networks of interoperating gadgets closer to reality.

Designed to imitate a block of chocolate, the WunderBar is made up of wireless Bluetooth Low Energy (BLE)-enabled sensors which can be snapped off to serve different purposes.

A main module uses an NXP ARM 1800-Series Coretwx-M3 Microcontroller and Wi-Fi 802.11b/g/n unit to connect the network of sensors to Wi-Fi. Sensor readings are sent from the six smaller modules using BLE, which also allows the monitoring of their battery levels.