📞 Festival fans dial in for backstage bliss – how XIS made it happen at Rock Herk.

At Rock Herk 2025, a bright yellow phone booth popped up right in the middle of the buzzing festival crowd. Total vintage vibes, a real rotary phone, and one clear message: “Step into the booth and take the call!” What followed was a unique activation that turned heads – smartly powered by XIS.

How did it work?

Festivalgoers entered the booth and called a virtual landline number. On the other end, a live operator was waiting with a quiz question. Each call was logged, with the caller’s name and number noted down. Got the answer right? Then you were in the running for backstage experiences, exclusive merch or a stack of drink tokens.

What did we do?

XIS provided the digital backbone for the entire campaign. Our platform registered the participants, matched correct answers to rewards, and sent out unique digital coupons via SMS – instantly and automatically. No paper, no hassle – just a ready-to-scan coupon at the merch stand. Each voucher was:

• Unique and personalized


• Valid for a limited time (e.g., 1 hour)


• Instantly scannable by staff

The result?

• A nostalgic, eye-catching activation


• Smooth, digital prize delivery via mobile coupons


• More interaction, more fun, more valuable data


• Smiles all around – for festivalgoers and for Rock Herk & HBVL

Whether you’re running a festival, managing a shopping centre or hyping up fans in a stadium – XIS turns any moment into a chance to surprise and delight. Even with a retro phone booth.