There’s an interesting new sensor beacon at Ruuvitag. It provides temperature, humidity, air pressure and acceleration and will be coming soon to kickstarter.
This means that the beacon is not just configurable but also fully user-reprogrammable. For example, you can run proprietary protocols and form mesh networks. The open hardware and software design to allows adaptation for your proprietary solution. Open hardware and software also reduces the risk should you base your system on it and Ruuvitag (the company) no longer support it.