> Bluetooth is very finicky.

Is there any hope that these new wearable computers will lead to the adoption of something better than Bluetooth? Something based on IEEE 802.15.4, maybe?

BTLE is actually quite simple to understand.

BTLE implementations on the other hand, those are horrible.

It isn't all that hard to outright crash an iPhone when using BTLE.

Other platforms are... interesting.

Part of the problem is that the overall big BT spec is rather all encompassing, getting test coverage on it is hard.

I assure you, bluetooth on iOS isn't much better than on Android. You need some pretty insane workarounds to get it to work half well on either.

One of the advantages of having a Nexus/Play Edition Device.

They have almost all their users on the latest OS, they control the stack end to end and everyone is quite fine if features are only supported on certain models.

What about the other 79.1% of android users?

http://developer.android.com/about/dashboards/index.html

71.2% can be ignored since android wear doesn't support them. My own experience in wearable tech is that 68.7% of our android users are running 4.4 and the nexus 5 is twice as popular as the next most popular phone.

I was talking about Nexus/Play edition devices, not all Android devices.

Not necessarily. Remember the huge problem with 2013 Nexus 7 having wifi and bluetooth on at same time? Many bluetooth keyboards and some other accessories just wouldn't work at all with wifi enabled. It was broken for the longest time. Looks like it still is not working properly for some users:

https://productforums.google.com/forum/#!topic/nexus/ORce7P9...

Android Wear devices are supposed to work with Android devices not specifically Nexus devices.

Moto 360 is supported on all Android devices with BT 4.0 support which is a lot of different hardware and software combinations.