Activation is a process wherein software connects to Adobe servers via the Internet and associates the Adobe products with the computers on which the products are used. For complete details on activation, see http://www.adobe.com/go/activation.
When first launching Photoshop CS6, you will be prompted to activate the Photoshop CS6 as a part of the installation. The following activation requirements will need to be completed within seven days after first launch of the Photoshop CS6 or it will stop working:
Log in with an Adobe ID
Activate the product online
If you already have an Adobe ID, you should use that one. If you do not have one, you will be prompted to create an Adobe ID as part of the Photoshop CS6 installation and activation process.You must have internet access to activate the product. If you are temporarily offline during the installation process, you have a seven-day grace period after first launch of the beta during which you can connect to the Internet and perform the activation. You cannot activate the Photoshop CS6 on a computer that is permanently offline.