The document describes a campaign by Swedish Post called "The World's Safest Hand" which uses a smartphone app to assign package delivery missions to participants in certain locations. Users compete to complete missions faster than others for a chance to win prizes, and can gain an in-app "safety percentage" by visiting local post offices. The campaign was created by a Swedish agency to promote Swedish Post's brand and emphasize safety, blending online and offline experiences while highlighting the city's post offices and sense of competition and time relevance. However, it is noted that the campaign may have benefited from stronger social media engagement throughout each day.