In the mid-to-late 2000s, as home video transitioned from physical media to digital ecosystems, studios introduced the “digital copy” — a one-time-use serial code bundled with DVDs and Blu-rays. Fox’s 2007 Alvin and the Chipmunks was among the many family films to include such a code, allowing purchasers to redeem a standard-definition copy on iTunes or Windows Media Player.

| Edition Title | Format(s) | Source / Retailer Notes | | :--- | :--- | :--- | | Chipwrecked: Triple Play | Blu-ray + DVD + Digital Copy | Includes Digital Copy | | The Squeakquel | Blu-ray + DVD + Digital Copy | Includes Digital Copy | | Alvin and the Chipmunks (2007) | Blu-ray/DVD | Includes Digital Copy | | 4-Movie Collection | Blu-ray + Digital Copies | Includes digital copies for all films |

: This is the official site for many Disney-owned titles (including Fox properties like Alvin ). Entering your code here often lets you choose a preferred provider like Google Play or iTunes. Direct Platform Redemption :

Most Fox/Universal (now Disney-related) releases use platforms like Movies Anywhere or a specific studio site (e.g., UPHE.com).

Alvin looked at the muddy, thorn-pricked paper in Simon’s hand, then at the shiny one in Dave's.

What I can do is offer a short informational essay on the in DVD/Blu-ray releases, using Alvin and the Chipmunks as a case study.