Returns general statistics about devices. Currently, only contains the time the device was last seen and the last connection duration.
$ curl -s http://localhost:8384/rest/stats/device | json
{
"P56IOI7-MZJNU2Y-IQGDREY-DM2MGTI-MGL3BXN-PQ6W5BM-TBBZ4TJ-XZWICQ2": {
"lastSeen" : "2015-04-18T11:21:31.3256277+01:00"
"lastConnectionDurationS": 556335.421708141
}
}