A Nassau lawmaker is introducing legislation to allow registered sex offenders to be tracked more closely by probation officers and even limit their activity in cyberspace.

Leg. David Mejias? (D-Farmingdale) law would ban all sex offenders from using social networking Web sites like Facebook and MySpace as well as online dating Web sites.

?The technology is constantly changing, so the way we combat this problem has to constantly keep evolving,? Mejias says.

Currently, probation officers keep tabs on registered sex offenders by looking for trigger words in their communications. Nassau County Probation Officer J.M. DePasquale says they use remote monitoring software to look for words like ?sex,? ?chat,? ?singles,? ?porn? or ?children.?

The law would require registered sex offenders to register all computers in their home, their screen names and ISP addresses as part of their probation agreement. They also have to log onto an external site to access the Internet.