Using TimeShift Plug-in with bluetooth only (without WLAN)

I have installed the TimeShift plug-in on Theta V. It works fine at home with WLAN connection to avoid me in the picture. However, I have no WLAN access outdoors. Is it feasible to use the TimeShift plug-in with bluetooth connection only? If not: is there, aside TimeShift plug-in, another option to avoid oneself in the picture?