"The potential data-gathering could be extremely intrusive, including sensitive personal data such as a person's ethnicity.
Data about our health, race, religion or politics is further categorised as sensitive personal data.
Others have expressed concerns over telecommunication companies' capacity for safely storing sensitive personal data.
"This is, I accept, a case in which sensitive personal information is involved," the judgment said.
A second look, in 2011, persuaded the investigators that sensitive personal data had indeed been obtained.
Ad companies say they will not use sensitive personal and health information for advertising purposes.
Privacy International said the judgment did not specify whether the unlawfully obtained, sensitive personal data would be deleted.
The idea of handing the average bar staffer long-term responsibility over sensitive personal data is an immensely creepy proposition.
And they argue that placing sensitive personal information on centralized computers will make it possible for information to leak out.
South London healthcare trust has admitted to losing two unencrypted memory sticks containing sensitive personal data about patients.
The agency requires Registered Traveler service providers, including Clear, to encrypt files containing participants' sensitive personal information.
