# Installing a license key

The Noise Ninja software application is freely distributable. However, certain features of the software are disabled unless a valid license key is installed:

- Images are watermarked with a gray grid when they are saved
- Batch processing is disabled.
- 16-bit TIFF output is disabled.
- Multiprocessing support is disabled.

If you purchased Noise Ninja at a retail store, then it probably came with a sticker containing a license key. If you downloaded Noise Ninja from the Internet, you can purchase a license online at www.picturecode.com and receive the key via email.

A license key contains two parts: a user name, and a keycode. To install a license, select the "Install and view license" command in the Help menu. When the license dialog is displayed, type or paste the user name in the User name field of the dialog:

Next, type or paste the 30-digit keycode, including hyphens, in the Keycode field:

Now press the Install key. You will be asked to accept a license agreement. Read it and accept it to continue installation of the license key.

If your license key is valid and was entered correctly, then you should see a dialog indicating that the license was installed. If not, then re-enter the key, checking it carefully for typographical errors.

A license can also be rejected if your system clock has been set back to a date before the license was issued. If this is the case, update your clock to the correct time and date, and try again to install the key.