I'm curious too. For one thing, I'd want to know where and how the historical data is stored, since it essentially provides an always-on record of my movements,

I'm curious too. For one thing, I'd want to know where and how the historical data is stored, since it essentially provides an always-on record of my movements, and with only one or two reference points, it could prove extremely revealing if accessed. But I do think a dedicated motion chip is a great idea.