On the freeways where I live are large signs that show transit times to various points-- those are very accurate and very nice to have.If you're concerned about privacy and tracking, don't wear a device that can track you.
But if you're in an airport, you can assume your name and travel details will be reported to the government. Even if your local coffee shop wants to know how many you stop in for a latte, who cares? If you care, wear a tinfoil hat or unplug.
Giuseppe Levi - Bologna University, Bologna, Italy
Evelyn Foschi - Bologna, Italy
Bo Höistad, Roland Pettersson and Lars Tegnér - Uppsala University, Uppsala, Sweden
Hanno Essén - Royal Institute of Technology, Stockholm, Sweden
Unfortunately, Levi is a long time acquaintance of Rossi, so his independence is hard to justify.