Shopping centre uses mobile phone data to "monitor visitor levels"
tugwilson at gmail.com
Tue Aug 23 08:52:46 BST 2011
On 22 August 2011 22:22, Tony Naggs <tony.naggs at googlemail.com> wrote:
> Sounds like what is done at som shopping Malls, I think maybe Bluewater was
> mentioned before. (I apologise for not digging out references, but I'm out
> about writing from my mobile phone.)
> Basically the mobile network signalling within the shopping mall is
> monitored (using software defined radio hardware & open source software).
> When a phone registers with a network it gets a temporary device ids (a
> TIMSI if I remember correctly), and these are recorded so the the Mall
> owners can gather statistics on the routes people take through the mall, how
> long they spend in stores, at the food court, etc.. and see how in Mall
> events such as fashion shows, Santa's grotto etc affect behaviour. They
> should not at any point have any information that would identify actual
So they are collecting very fine grained location data for individual
phones. No doubt the towers log the information which would let you
turn a TIMISI into a telephone number. Handy if there's a riot.
I wonder how long the mall keeps the data
More information about the ukcrypto