Now trimmed -earlier version bounced by the server On 14 Apr 2014, at 20:14, "Bob W-PDML" <[email protected]> wrote:
>> On 14 Apr 2014, at 15:17, "Bruce Walker" <[email protected]> wrote: >> >> Bob's hearing is acute and directionally accurate. > > > Har! Quite the contrary! I had my annual hearing test about 2 weeks ago. I am > deaf in the soprano part of the spectrum (so I should get half price at the > opera), and just above the line for ordinary conversational range. I also > can't echo-locate properly, so I've had to give up my superhero alter ego. > >>> I still am not quite grasping how you managed it (from computer at home?) >>> but never mind, my cell-phone tracking device only works in my apartment and >>> involves calling the number from my landline and listening for the ring. >>> >>> ann > > > But the Find my phone thing does work on similar principles. > > Smart phones and tablets like the iPad contain GPS receivers, so they can > plot their position. > > If they can get a connection to the internet, via wifi or the phone network, > they can use the internet connection to report their position back to a > central point, in this case my Apple account. > > Other devices with access to my Apple account, such as my iPad, can then tell > me the position of the iPhone and display it on a map. Alternatively, if > someone had stolen it I could have called in an air strike. > > Now, the devices can also talk to each other, presumably via the account > rather than point-to-point, although that might be possible over 4G. This > meant I could tell the phone it was missing, and put a message on the display > telling a finder how to contact me. I could also have disabled it, or told it > to make a noise, but obviously I didn't want to alert anyone to it. > > There is also a feature which you can use to track your friends. Luckily for > me I don't have any. But I imagine it just tells you where their phone is, if > they've given permission, on the assumption that they have it with them. > > This is why al-Qaeda don't use cellphones. > > B -- PDML Pentax-Discuss Mail List [email protected] http://pdml.net/mailman/listinfo/pdml_pdml.net to UNSUBSCRIBE from the PDML, please visit the link directly above and follow the directions.
