Controversial proposals to tag elderly people with dementia and Alzheimer's have been defended by a Birmingham MP.
Lynne Jones (Lab Selly Oak) said: "It could allow people to be cared for in the community instead of in a home and help relatives and carers."
The idea prompted a furious reaction after it was suggested by Science Minister Malcolm Wicks yesterday.
He said technology could be used to help families keep tabs on frail relatives.
But a number of organisations expressed concern about using the same technology on elderly people as on criminals.
The staunchest criticism came from the National Pensioners Convention.
Joe Harris, the general secretary, said: "For a Minister to suggest an inhumane electronic tag on the country's most vulnerable can in any way replace dignified care is absolutely shocking."
But Dr Jones insisted tagging could improve care.
"This is a very different thing to tagging an offender even if some of the technology is similar.
"Many constituents who have relatives with dementia have discussed with me the issues they face in caring for them, including people wandering off and becoming lost. "Tags could make it safer for people to stay in their own homes or with relatives and prevent them having to go into care.
"It is worth looking at."
The Alzheimer's Society said electronic tagging could ease concern for carers and give some dementia sufferers greater independence.
But it warned a balance needs to be struck between benefits and the infringement of civil liberties.
"Technology, which is often used to 'secure' animals, retail products and prisoners, should not automatically be transferred to people with dementia without full consideration of the ethical issues."
Mr Wicks said the idea of using satellite monitoring to benefit society should be discussed.
"We've got an ageing population with many people frail and many suffering from dementia, including Alzheimer's.
"How can we get the balance right so that these people have the freedom to live their lives, to go out in the community and go shopping?"
He warned many families were worried about vulnerable relatives.
"Help the Aged wants to see more older people with dementia enabled to live as independently as possible in the community.
"This might be a way of achieving this whilst minimising some of the risks."
There are about 700,000 people in the UK with dementia. That figure is set to rise to more than one million in 20 years and to 1.7 million by 2050.