Samsung Pay, the company’s answer to Apple Pay, officially launched today in the United States after a month-long beta program.
In theory, Samsung Pay should be an extremely handy mobile payment service. Alongside NFC payments, it also uses “Magnetic Source Transmission” technology, or MST, which emits the same kind of magnetic code that make credit card readers work. (Samsung acquired the company that pioneered this technology, LoopPay, back in February.) It’s an advantage over services like Apple Pay and Android Pay, which primarily rely on NFC technology, which is still not widely available.
This article originally appeared on Recode.net.