People can equally be equipped with GPS devices so that their whereabouts can be instantly known.
This is particularly valuable for those who suffer from dementia or other mental disorders.
Those who care for these patients can get to the patients quickly through the location knowledge.
It is possible to monitor the patients 24/7 and the system could be made intelligent to report locations automatically when the bearer leaves their normal area of operation [1].
Personal GPS devices find use in the context of security as well.
Tagging prisoners with GPS devices will help locate them should they escape.
Parolees can be tagged with GPS devices to generally track them and to raise an alarm if they leave the permitted zone.