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Article History

Received: 13 March 2024

Accepted: 9 January 2025

First Online: 18 February 2025

Competing interests

: The authors declare no competing interest.

: Mobile phone data were purchased by Swisscom in November 2019, for a total cost of 32,400 CHF (i.e. ~36,000 USD, in October 2023). The costs included 1800 CHF for “Scope & Alignment” (1−man day of work), 9000 CHF for “Data mining & preparation” (5−man days of work), and 21600 CHF for “Data processing & analysis” (12−man days of work).