ill be honest i dont know exactly how its done and what solution they use as i dont have access to them :P from what i understand from my wife is that they only access information from the clinics server and require her identification each time she uses it and they are not taken home. so im not exactly what they use but i know she said the local hospital uses Zsentry for thier tablets "im not sure what that is or what it does"
i know the local marshfield clinic uses some fujitsu tablet for its 45 locations that communicate with thier central location (again im not sure how or what security measures are used)