Mastercard's ([[MA]] +0.5%) co-branded credit card with the Gemini Exchange reflects a shift in the kinds of purchase rewards consumers prefer, especially in the past 12-18 months, Jessica Turner, Mastercard's global head of new digital infrastructure and fintech said in a pre-recorded discussion broadcast at the Consensus 2021 event.In April, the two companies announced that the card, which allows cardholders to earn up 3% back on qualifying purchases in bitcoin or any of ~30 other cryptocurrencies, will be available this summer."Certainly three years ago, people probably weren't as excited about earnings crypto as they are now," Turner said. "Understanding that, and using it as an opportunity to get more people involved in the cryptocurrency space in a safe way by offering rewards with something that people know how to use in their everyday life — which is Mastercard — is really an act of brilliance."~250K people have signed up for