Hi @SimonA1 ,
Have you looked at improving the accuracy settings on the iPad itself?
See https://support.google.com/maps/answer/2839911
We had the same idea, but unfortunately due to the lag in response, by the time we have been made aware that the device has left the premise it is too late. It is also worth noting, that having location on constantly can drain the battery quite quickly.
An idea we moved on to was using Bluetooth beacons from the Meraki Access Points, but we never progressed this. The idea was to have a constant ping running to and from the device via an app, but again by the time you realise the device is off premise it is too late. The reason for Bluetooth over WiFi, is that Bluetooth uses less power.
The non-technical approach, if you can do this, is to simply to give end-users their own device, making them responsible for it. Or install some physical anti-theft tagging system, like clothing stores have, which comes at a cost but is a low tech way to protect valuable goods.
Eventually we just purchased low-end / cheap Android devices that did the job and just expected some would go for a walk and never return. £399+ iPad vs £70 Android Device; which would you prefer to lose...
Thank you,
Peter James