Protects Exe-file with its own password from non-authorized execution or copy. Add a little more size (about 2k bytes); Custom the password-box notice; Keep the original file icon unchanged.Identify the computer intellectually; Show the password in special time. Can not get original exe file without password; Operate easily; Absolutely safe; Launch with high speed, all operations are in memory; Encrypt all size exe file, from k bytes to M bytes.