(They receive a fee in exchange for contributing data).
Some other states are already assessing such a fee in the course of drug prosecutions.
Most expensive Luka Modric from Tottenham to Real Madrid for a fee in the region of £33 million, 2012.
Luiz joined Chelsea last year during the January transfer window for a fee in the region of £20m.
Couples who broke the rules have been forced to pay a fee in proportion to their income.
For example, the University of Washington has already offered credit for a fee in a few Coursera courses.
But all of the above charge a fee in the form of a percentage of the debt moved over.
Most expensive Nery Castillo, from Olympiacos to Shakhtar Donetsk for a fee in the region on £15 million, 2007.
He wants New Jersey drivers to pay a fee in addition to the $8 toll to cross the Hudson River.
The 26-year-old is expected to sign a three-year deal at Stamford Bridge after the Blues agreed a fee in the region of £7m with Corinthians.
Keeping in touch: Wi-Fi and high speed internet access is available for a fee in all the rooms and there is a business centre if needed.
