Protects your software from unauthorised copying or distribution using public key cryptography. SlockPK gives your shareware application protection by making it almost impossible to use the unregistered shareware for extended periods. It can track your software after it has been registered\; collect valuable statistical information about frequency of software usage\; and check that it has not been pirated or installed on more machines than have been registered. Unregistered copies can be disabled, or set to a trial status. SLockPK also provides an encrypted interface for collecting credit card information.