Ng, Soo Sim writes:
Since the Hardphone is 'hard-coded', the phone
can move round the
vicinity of the redisential area and still able to make a
call. Potentially this will lead to abuse, as someone may take the
phone to a different location when owner is not around and make a
'free' call, return back the phone and the billing still charge the
original subsriber.
with same logic, someone can take some else's cell phone, credit card,
etc.. that is called stealing.
-- juha