This is for wireless communication to/from the device and not operating it from the control panel. For critical incidents paramedics would use their own tools (glucometer & needle).
Would paramedics/well-equippped ambulance ever go as far as trying to disable an internal pump before reaching the hospital?
Edit: Also, what's the difference between the 'control panel' and the 'wireless [controller]'? My understanding was it was entirely implanted, with no external connections (and even recharged via induction loop, or surgical replacement). If that's the case, then all comms are, by necessity, wireless. NFC control might mitigate the threat a little, at least from a range perspective, but I can't see where there could otherwise be a difference.