Medical uses are an obvious avenue for practical Smart device application. Users with Cronic illness such as Diabeties, heart or cognative issues could utilise such a device to document patient development remotly.
For example blood pressure, temperature and other criteria could be linked to a patients smart device. This can be documented and fed into a local hospital/ GP system which monitors patient status continuously. Any alarming changes in data above certain threshholds would immediatly inform the corresponding service or official.
Such systems are already being developed. Such as IBM and the University of Florida there is also a (quite idealistic) video accompaying…
In this video (And in a typical american sentimental way) there are some reletive ways smart devices and the convergence of these with other technologys could revolutise health care in the future.
Also worth a mention is the ongoing NHS IT system that is utilising RFID tagging to track equipment, medicines and patients in a similar manner .