Google (sadly, always) is likely suited to this, as it's devices check in almost constantly where you're at depending on the mode.  Both app's can get this locally, or their app services follow you as well with api access.  I have google glasses I've been doing some debugging, and they check in probably at least every 5 min, and I'd assume the phones do as well.  Never really realized this before, but seems the best way to track anyone.  Good enough for the government...

That would be an endpoint, talking some kind of rest or js-ish protocol with google, probably with an amqp backend of some flavor tracking the tasks in a|many state machine for this and other services you might notify into, tracking responses or other metrics.


On 07/30/2014 09:25 AM, David Schwartz wrote:
Thanks, but what I’m really looking for is insights around the data transport, although I do understand what you’re saying about using a third-party service like Twitter. Perhaps there are services already designed for such stuff?