That's only partly a shitpost by the way, yes, your SIM card probably has a JVM or some other kind of Java environment
@joepie91 They must have fired the guy who counted devices a few decades ago, because 3 billion seems very low today
@joepie91 not sure if there are more sim cards or emv payment cards, both could certainly have javacard.
@joepie91 a much smaller contribution might be passports and biometric ID cards
@joepie91 that's why they don't go very fast