Lime Bikes has launched the Promise Codes campaign in the UK, an initiative that gives e-bike users free ride minutes only after they type a safety pledge into the app. In this way, the promo code itself becomes part of the communication, but also a mechanism designed to influence rider behaviour.
The campaign has launched across London, Birmingham and Milton Keynes and was created by agency The Or. It is based on a simple psychological insight: people are more likely to fulfil a commitment they have written down themselves than one they have only read.
That is why the billboards do not feature traditional promo codes made up of random letters and numbers, but entire sentences that users must type in to activate their reward. Among them are promises to ride “under the influence of whimsical summer vibes only” or to share the road with others as thoughtfully as they share snacks in the park.
Visually, the campaign embraces minimalism. Long text-based codes take centre stage, while the brand’s distinctive green colour serves only as a frame that further emphasises the message itself.
A key element of the campaign is local adaptation. The pledges have been created based on riding behaviours and challenges specific to individual cities, giving the communication an additional layer of relevance. Beyond outdoor advertising, the codes are also distributed through stickers placed in bike baskets and through collaborations with content creators across digital channels.
For Lime, which has increasingly used cultural and social themes as a starting point for its communications in recent years, Promise Codes represents a way of integrating safety education into the user experience instead of leaving it as a separate message that most people ignore.
“Promo codes felt like an untapped creative opportunity, unlocking rewards, but the codes themselves are typically uninspiring. Why can’t they be entertaining to read and redeem? And if they also encourage people to think more carefully about how they cycle, it’s a win-win.” said Paulo Salomao of The Or.
The campaign demonstrates how even one of the simplest digital tools can be transformed into a communication channel when a brand decides to change its role. Instead of being a vehicle for discounts, the promo code becomes a small agreement between the user and the brand.
