Cadbury Dairy Milk — Dosti Ka Shubh Aarambh AR App

The Campaign Context

Cadbury Dairy Milk's "Shubh Aarambh" campaign positioning had made it one of the most beloved brand narratives in India by 2012 — the idea of starting something new with something sweet had resonated deeply with Indian consumers. For Friendship Day 2012, Cadbury wanted to extend this into a digital experience that celebrated new friendships in a way that felt personal, shareable, and genuinely magical. The brief to Blink Digital was to create a mobile AR experience that would let people send something meaningful to a friend through their phone.

The Idea — Your Chocolate Wrapper Becomes a Friendship Token

The concept was built around the Cadbury Dairy Milk wrapper as an AR marker. A user would open the app, point their phone camera at a Cadbury Dairy Milk wrapper, and the wrapper would come alive — AR friendship band animations floating above it, social sharing icons appearing around it. The user could then choose from 9 uniquely designed virtual friendship bands, each carrying a specific emotional message about friendship. They would add a personal text message, and the band — rendered as an AR image with the personalised message — would be posted to their Facebook wall with the friend tagged in the status update.

In 2012, this was a genuinely novel experience. AR on consumer mobile devices was new to most Indian users. The idea that a chocolate wrapper could become a portal to sending a heartfelt friendship message to someone on Facebook — in a country where Friendship Day carries real cultural weight — created a moment of delight that static digital campaigns could not replicate.

My Role — App Developer

I built the application at Blink Digital, covering the complete development across both iOS and Android platforms. This meant Vuforia AR integration and wrapper tracking configuration, the 3D friendship band rendering and animation system, the Facebook Graph API integration for wall posting and friend tagging, and the personalised message flow that connected the AR experience to a social share.

Dual-platform development in 2012 was a different challenge from today. React Native and Flutter did not exist — iOS and Android required entirely separate codebases, and Vuforia's SDK behaviour differed between platforms in ways that required separate debugging and optimisation. Getting consistent, reliable wrapper tracking across both platforms, under the varied lighting conditions of Indian homes and outdoor environments, required significant testing.

How the Experience Worked

The user flow was straightforward but the technology behind it was not. Opening the app activated the camera. Pointing it at a Cadbury Dairy Milk wrapper triggered Vuforia's image recognition — the wrapper's distinctive purple and gold design served as the AR marker. Once tracking locked, floating AR elements appeared above the wrapper: social icons, the friendship band selection interface, and the animated AR bands themselves. The user selected a band from 9 options, typed a message, and confirmed sharing. The app then composed an image combining the AR band visual with the personalised message and posted it to Facebook, tagging the recipient.

The Facebook integration — using the then-current Facebook Graph API for wall posts with image attachments and friend tagging — required careful handling of OAuth authentication within the mobile app flow, keeping the experience smooth without breaking the AR immersion for authentication screens.

Results and Reflection

The campaign reached 20,000 downloads — a strong result for a branded AR app in India in 2012, when mobile data was slower, smartphone penetration was lower, and AR was an unfamiliar concept for most users. The emotional mechanic — sending a virtual friendship band to someone you care about, personalised with your own message — created genuine engagement that pure entertainment AR experiences often miss.

Looking back from 2026, what this campaign got right was the human motivation underneath the technology. It was not AR for its own sake. It was AR in service of a real human desire — telling a friend you value them, in a way that felt special and personal. The Cadbury wrapper was a meaningful object to use as the trigger because the brand already stood for sharing and sweetness. The technology amplified something that was already emotionally resonant.

This is the lesson I carry into every XR project: the most memorable immersive experiences are the ones where the technology serves a human truth rather than existing to demonstrate its own capability.