Tracker data not update

Hi,

I've a TK102-2 Tracker,
when the tracker indoor,
the tracker will become offline,
but I see the traccar server log,
the tracker still send the location to the traccar server,
but traccar server will not update the data,
so I can not identify it's really offline or not,
could you please help to solve this issue, thanks!

The last location received at 2015-09-02 15:27:32
http://i.imgur.com/fb9YWPC.jpg

but the tracker still send the data to traccar server after 2015-09-02 15:27:32

2015-09-02 15:26:23 DEBUG: [21E1F92C: 55002 <- 223.139.162.54] - HEX: 283032373034323933363230334252303031353039303241323435362e363830304e31323131352e31303937453030392e343037323631373231382e383230303030303030304c303030303030303029
2015-09-02 15:26:23  INFO: device: 9, time: Wed Sep 02 15:26:17 CST 2015, lat: 24.944666666666667, lon: 121.25182833333334
2015-09-02 15:26:53 DEBUG: [21E1F92C: 55002 <- 223.139.162.54] - HEX: 283032373034323933363230334252303031353039303241323435362e363935334e31323131352e31303531453030332e31303732363337302e3030303030303030303030304c303030303030303029
2015-09-02 15:26:53  INFO: device: 9, time: Wed Sep 02 15:26:37 CST 2015, lat: 24.944921666666666, lon: 121.25175166666666
2015-09-02 15:27:24 DEBUG: [21E1F92C: 55002 <- 223.139.162.54] - HEX: 283032373034323933363230334252303031353039303241323435362e363537314e31323131352e30393039453031332e31303732373037302e3030303030303030303030304c303030303030303029
2015-09-02 15:27:24  INFO: device: 9, time: Wed Sep 02 15:27:07 CST 2015, lat: 24.944285, lon: 121.251515
2015-09-02 15:27:53 DEBUG: [21E1F92C: 55002 <- 223.139.162.54] - HEX: 283032373034323933363230334252303031353039303241323435362e363730374e31323131352e31303431453030352e31303732373332302e3030303030303030303030304c303030303030303029
2015-09-02 15:27:53  INFO: device: 9, time: Wed Sep 02 15:27:32 CST 2015, lat: 24.944511666666667, lon: 121.251735
2015-09-02 15:28:23 DEBUG: [21E1F92C: 55002 <- 223.139.162.54] - HEX: 283032373034323933363230334252303031353039303241323435362e363730374e31323131352e31303431453030352e31303732373332302e3030303030303030303030304c303030303030303029
2015-09-02 15:28:23  INFO: device: 9, time: Wed Sep 02 15:27:32 CST 2015, lat: 24.944511666666667, lon: 121.251735
2015-09-02 15:28:53 DEBUG: [21E1F92C: 55002 <- 223.139.162.54] - HEX: 283032373034323933363230334252303031353039303241323435362e363730374e31323131352e31303431453030352e31303732373332302e3030303030303030303030304c303030303030303029
2015-09-02 15:28:53  INFO: device: 9, time: Wed Sep 02 15:27:32 CST 2015, lat: 24.944511666666667, lon: 121.251735
2015-09-02 15:29:23 DEBUG: [21E1F92C: 55002 <- 223.139.162.54] - HEX: 283032373034323933363230334252303031353039303241323435362e363730374e31323131352e31303431453030352e31303732373332302e3030303030303030303030304c303030303030303029
2015-09-02 15:29:23  INFO: device: 9, time: Wed Sep 02 15:27:32 CST 2015, lat: 24.944511666666667, lon: 121.251735
2015-09-02 15:29:24 DEBUG: [21E1F92C: 55002 <- 223.139.162.54] - HEX: 283032373034323933363230334250303030303030323730343239333632303348534f29
2015-09-02 15:29:24 DEBUG: [21E1F92C: 55002 -> 223.139.162.54] - HEX: 283032373034323933363230334150303148534f29
2015-09-02 15:29:53 DEBUG: [21E1F92C: 55002 <- 223.139.162.54] - HEX: 283032373034323933363230334252303031353039303241323435362e363730374e31323131352e31303431453030352e31303732373332302e3030303030303030303030304c303030303030303029
2015-09-02 15:29:53  INFO: device: 9, time: Wed Sep 02 15:27:32 CST 2015, lat: 24.944511666666667, lon: 121.251735
2015-09-02 15:30:24 DEBUG: [21E1F92C: 55002 <- 223.139.162.54] - HEX: 283032373034323933363230334252303031353039303241323435362e363730374e31323131352e31303431453030352e31303732373332302e3030303030303030303030304c303030303030303029
2015-09-02 15:30:24  INFO: device: 9, time: Wed Sep 02 15:27:32 CST 2015, lat: 24.944511666666667, lon: 121.251735
2015-09-02 15:31:01 DEBUG: [21E1F92C: 55002 <- 223.139.162.54] - HEX: 283032373034323933363230334252303031353039303241323435362e363730374e31323131352e31303431453030352e31303732373332302e3030303030303030303030304c303030303030303029
2015-09-02 15:31:01  INFO: device: 9, time: Wed Sep 02 15:27:32 CST 2015, lat: 24.944511666666667, lon: 121.251735
2015-09-02 15:31:32 DEBUG: [21E1F92C: 55002 <- 223.139.162.54] - HEX: 283032373034323933363230334252303031353039303241323435362e363730374e31323131352e31303431453030352e31303732373332302e3030303030303030303030304c303030303030303029
2015-09-02 15:31:32  INFO: device: 9, time: Wed Sep 02 15:27:32 CST 2015, lat: 24.944511666666667, lon: 121.251735

GPS doesn't work indoors, so I guess your device keeps sending last valid location.

In future I plan to add device connection status to the web interface to show whether device is connected and actively send data.