— n
the surveillance of a person’s activities by studying the data trail created by actions such as credit card purchases, mobile phone calls, and internet use

from: http://dictionary.reference.com/browse/dataveillance

As the authors of Net Locality* define it:

“Surveillance is more than just hidden cameras and undercover police officers; environments track us through our voluntary exposure of personal data”

“location-aware devices normalize data-veillance and make it a necessary component of our everyday interactions with the web”

* Gordon, E., & de Souza e Silva, A. (2011). Net Locality. The handbook of internet studies. Chichester, UK: Wiley-Blackwell. doi:10.1002/9781444340679. p. 11