A club might also hire or broadcast forms of entertainment other than striptease (such as pay-per-view events), for which it earns revenue via premium fees. Some clubs have also moved into providing chat and broadcast services via the internet, including live video feeds. Beyond this more passive entertainment, some clubs' dancers offer additional services, such as lap dances or trips to the champagne room, for a set fee rather than for tips. This fee will typically include a set fee for the room, for a fixed amount of time. Lap dances may also be offered during lingerie modeling sessions. During a lap dance, the dancer rubs against the customer's crotch while he or she remains clothed, in an attempt to arouse or bring the recipient to climax. Touching of strippers is not permitted in many localities, however, some dancers and clubs allow touching of dancers during private dances. In some parts of the U.S., there are laws forbidding the exposure of female nipples, and thus dancers must cover their nipples with pasties to comply with those laws. Such clubs are known as "pastie clubs".