  Administrative data allows us to count for the number of residents. The
geo-localization of people by mobile phone, by quantifying the number of people
at a given moment in time, enriches the amount of useful information for
"smart" (cities) evaluations. However, using Telecom Italia Mobile (TIM) data,
we are able to characterize the spatio-temporal dynamic of the presences in the
city of just TIM users. A strategy to estimate total presences is needed. In
this paper we propose a strategy to extrapolate the number of total people by
using TIM data only. To do so, we apply a spatial record linkage of mobile
phone data with administrative archives using the number of residents at the
level of sezione di censimento.
