Best answer by Nancy_OVO
That's a great question, and I'm sure it's theoretically possible as it's just a network similar to Bluetooth.
However, it's not something we'd offer as a service. We provision to supply all our customers one IHD each and wouldn't offer another unless the first was faulty or became damaged.
If you had an IHD from a previous supplier that happened to be compatible with our systems, we'd also be wary of connecting it as we can't be 100% certain the device is secure, or where the data is going.
Hope this helps,