Tracking offline conversions for influencer marketing campaigns can be a complex task, but it’s not impossible. Although influencer platforms primarily track online activities, they can leverage various techniques to measure offline impact.

1. Unique promo codes: Influencers can be given unique promo codes they share with their audience. Brands can track these codes in-store or at events, tying offline conversions back to influencer campaigns.

2. Surveys: Brands can ask customers how they heard about the product or service. Mention of an influencer can indicate a successful offline conversion.

3. Foot traffic analytics: Brands with physical stores can use geo-location tech to assess if there’s an uptick in foot traffic following an influencer’s post or attendance at an event.

4. Sales lift studies: These involve comparing sales pre and post-campaign in the geographical areas where the campaign was active, helping gauge sales impact.

Platforms like Flinque provide detailed analytics to track online performance of influencer campaigns. But for offline conversions, partnership with third-party data providers or utilization of the above strategies might be required.

While these methods are valuable, they may not provide a complete picture. Offline measurement usually requires coupling with other digital data to get an idea of influence and effect. Each approach has its strengths and limitations, so brands need to select methods that best suit their specific needs and circumstances. It’s also entirely possible to use a combination of offline and online tracking techniques to capture full campaign impact.