Stablecoin prepaid debit cards integrated into Apple Pay and Android Tap Pay could be the catalyst for the next wave of mass adoption—potentially bringing 10 million new users into crypto. Think of it as the missing link between traditional merchant infrastructure and consumer payment systems. Right now, that friction point kills momentum. Once these cards mature and go mainstream by 2027, the real inflection hits in 2028 when merchants start accepting them natively. That's when the flywheel actually spins. It's not just about convenience; it's infrastructure maturity meeting consumer behavior shift. The bridge works both ways—fiat on-ramps become frictionless, and suddenly spending crypto feels like paying with a regular card. That's the moment everything changes.