I’m curious about something… You can add a GPS module to your particle device…
For instance:
GPS Module GPS NEO-6M(Arduino GPS, Drone Microcontroller, GPS Receiver) Compatible with 51 Microcontroller STM32 Arduino UNO R3 with IPEX Antenna High Sensitivity for Navigation Satellite Positioning https://www.amazon.com/dp/B07P8YMVNT/ref=cm_sw_r_cp_api_i_aw.DEbFJ8C6F1
Or
Adafruit Ultimate GPS Logger Shield - Includes GPS Module https://www.amazon.com/dp/B00E4WEX76/ref=cm_sw_r_cp_api_i_hy.DEb47Y33GT
Or even
Adafruit Ultimate GPS FeatherWing https://www.amazon.com/dp/B01G00Q5HA/ref=cm_sw_r_cp_api_i_Dy.DEb35TTJT2
But…
Now I see projects connecting these types of addon boards. My question is that based on cellular connection and/or wifi connection you should be able to triangulate the position of a device to close proximity without the GPS addon. Shouldn’t we be able to find out device position this way. I see it being done on computers and cell phones. Using an electron or boron we can find the position with cell towers. With photon and argon we can find it with wifi. Maybe this has been brought up already… I am not aware…