Users interested in receiving the free trial first need to read and agree to Apple's participation terms and fill out a form, after which the company will email a serial number to activate the software for the full length of the trial. The trial does not include sample images, but users can acquire both when placing an order by selecting the 'retail box' option. The Aperture 2.0 free trial requires an Intel-based Mac or a qualified PowerPC system to run, and Apple is encouraging users to download/run the Compatibility Checker to verify that a particular system supports Aperture 2. Apple also notes that free trial versions of the application cannot be updated, as this is restricted to purchased versions of Aperture only.