ruigominho writes: Matosinhos council authorities (in Portugal) started distributing GPS tracking devices to be concealed in school children's backpacks. Parents will be able to define a "virtual fence" — for example delimiting the normal home-school itinerary — and will receive a text message whenever the device goes outside this perimeter. This initiative is publicly supported by parents of missing children. Where do parent's protection instincts start conflicting with children privacy rights? Should children have any privacy rights at all, and if so, can those rights be surrendered to their parents? Being a parent and at the same time considering myself a privacy advocate I find this to be a very sensitive matter. Would Tom Sawyer have any chance of getting a kiss from Becky Thatcher if they carried a parent-imposed GPS tracking device with them? Or would we rather trade some marbles for a GPS carry service from Huckleberry Finn, or even hack their way into the tracking server? What are slashdot readers views on the subject?