The problem of "more capability" is that everyone has a smartphone in their pocket. Any interaction that lasts more than 2-3 taps, or 2 seconds, is a failure b

The problem of "more capability" is that everyone has a smartphone in their pocket. Any interaction that lasts more than 2-3 taps, or 2 seconds, is a failure because the user would have been better served by retrieving their phone. (niche "phone not accessible" situations notwithstanding) The right answer to wearable tech is less interaction. The value has to be in the device presenting you the right 1-second functionality at the right time. (ala notification triage, Apple Pay, and the laundry list of Home Kit integration that's still TBD)