Encrypt your flash's exe or swf files,protect distribution of flash files.The encrypted flash files can prevent cracking,prevent copying,prevent decompile. You can set play password binding to your users's computer. If you want to send your flash files to your users,this tool can protect your flash files. How to use this soft? Please watch the encryption video demonstration, you can find the video demo in download package. How do I know the machine ID of the user's computer? When a user wants to open an encrypted flash, the encrypted file will pop up a dialog box to request the user to enter a Play Password. This dialog box will display the machine ID of the user's computer. The user can send his/her own machine ID to you, and you can create a Play Password based on the user's machine ID. After that the user can use this Play Password to play your flash on his/her computer.