Hi! I just wanted to drop by and tell you about this device:
https://www.kickstarter.com/projects/463050344/ruuvitag-open-source-bluetooth-sensor-beacon
As a fellow Finnish guy it’s awesome to see them finally nearing their completion with this cool sensor device.
Watch the campaign videos and prepare to be blown away 
Info:
RuuviTag is a stand-alone Bluetooth 5 ready sensor beacon platform. It can be used as a standard Eddystone / iBeacon proximity beacon but it has the potential to be so much more.
By having a way to measure:
Ambient temperature
Relative humidity
Barometric pressure
Altitude
Acceleration
It’s possible to cover several use-cases. And no need to worry about charging the device: the battery has the potential to last up to 10 years depending on the SW used.
RuuviTag is compatible with both Android (4.3.2 or higher) and iOS (8.0 or higher) mobile phones.