Some independent stereo manufacturers including JVC, Pioneer, Kenwood, Alpine, Sony, and Harman Kardon also have iPod-specific integration solutions. Alternative connection methods include adapter kits (that use the cassette deck or the CD changer port), audio input jacks, and <answer>FM transmitters</answer> such as the iTrip—although personal <answer>FM transmitters</answer> are illegal in some countries. Many car manufacturers have added audio input jacks as standard.
Which type of iPod car integration product is illegal in certain countries?
FM transmitters