If a phone can wake itself up it isn't really off. Something is ticking over. It may have some components shutdown.
If the phone has been hacked it would be possible to get it to wake up without visible sign. However, I doubt that the makers would dare risking this themselves. People might get rather upset to find that their phone is phoning home when they thought they have switched it off. If phone was trying to communicate when supposedly off someone would notice. Removing an iPhone battery requires a screwdriver to open the case. You need to ignore the "Authorised Service Provider Only" message. Most other phones allow users to remove or swap the battery. -Jim On 13 November 2013 19:10, jore <[email protected]> wrote: > On 13/11/2013 6:46 PM, Ivan Trundle wrote: > > On 13 Nov 2013, at 2:58 pm, Andrew Thornton <[email protected]> > wrote: > >> Um, technically it is correct that a phone cannot be tracked when it is > >> switched off! > >> But my understanding was that if malware turns the mobile phone back on > >> periodically then the phone can be tracked!! Thus taking the battery out > >> would be one way to defeat this. > > From my reading of the reports, the implication is that the ‘off’ state > of a phone is not simply determined. With more complex phones, either > malware of other means are able to give the impression that the phone is > ‘off’, in spite of some vital circuitry being powered (such as the clock > etc). > > > > The inability of some phones to remove the battery is one impediment - > but in practice, how many people power down their phone and then remove the > battery, to be absolutely sure? > > > > iT > > > > Well, since spooks have been doing this sort of thing for ages in terms > using mobile phones as bugs even when powered off[1], is it not such a > stretch to think that this could EASILY extend to location tracking?? > > [1] http://news.cnet.com/2100-1029_3-6140191.html > > _______________________________________________ > Link mailing list > [email protected] > http://mailman.anu.edu.au/mailman/listinfo/link > _______________________________________________ Link mailing list [email protected] http://mailman.anu.edu.au/mailman/listinfo/link
