Shopping centre uses mobile phone data to "monitor visitor levels"

Tony Naggs tony.naggs at
Tue Aug 23 15:22:58 BST 2011

The Mall should only have transient knowledge of the TIMSI, only so long as
it sees the base station & mobile device maintaining their registration.
(Every 10 minutes or so if I remember correctly.) Then the system can log
that visitor N appeared at time X, and spent Y minutes in the Mall.

The number of mobile phone visitors can then be used as a proxy for footfall
in the Mall, and the property company can justify the rent it charges. No
personal or identifying data is needed.

On 23 Aug 2011 08:53, "John Wilson" <tugwilson at> wrote:
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