# WHAMO.tv > Viewer Appreciation, Made Measurable. WHAMO.tv is a broadcast response and viewer-appreciation platform for broadcast, cable, FAST, VOD and streaming operators. ## Campaign access modes - Timed campaigns accept new scan sessions only during a network-configured airing window. The default is 60 seconds, and the network can select another duration. - Open campaigns accept scans whenever a viewer sees the QR code during the campaign start and end dates. ## Core capabilities Unique per-airing QR tokens; HD and 4K broadcast creative; countdown or open-campaign video assets; mobile entry forms; first-party engagement data; sponsor redirects and conversion attribution; fraud review; official-rules workflow; audited winner selection; billing and administration. ## Important measurement note WHAMO.tv reports opt-in respondent and engagement data. It complements licensed audience measurement and does not claim that scans equal total television viewers. ## Key public resources - Product: https://whamo.galxy.tv/product - How it works: https://whamo.galxy.tv/how-it-works - Pricing: https://whamo.galxy.tv/pricing - Contact: https://whamo.galxy.tv/contact - API overview: https://whamo.galxy.tv/api-documentation