Originally Posted by
crewmeal
On a flight last year I put an air tag in my case and followed it through Teminal 2 at LHR to a baggage trolley. There it stayed and nothing happened whilst the B777 was taxiing to 27R. Fortunately the barcode on my baggage tag confirmed that my case had transferred at Cairo to my connecting flight to Luxor.
Again checking my case I found it was situated in the middle of the Nile! OK I was on a boat but not sure if these airtages are all that accurate.
Tomorrow I'm moving house and popped it in a box and I hope I can track the removal van up the M1!!
Airtags don't know where they are. They communicate with nearby iPhones and the location is of the iPhone they have contacted. If the iPhone has a good GPS lock or uses some form of dead reckoning /inertial integration, as when inside a building, then the iPhone can report that location. By off-loading the tracking function to phones it doesn't need to expend much energy.