So much wrongness in one sentence!
“Samsung Pay, which uses technology developed by its LoopPlay, has a feature neither of its main rivals can boast, as it can act as a passive magnetic reader. This means it can act as an Oyster card without being woken up”
LoopPay, not LoopPlay.
MST *sends* data to a mag stripe reader. Rather than being a passive reader, it's the complete opposite.
Oyster does not use mag stripe at all - it's Mifare/DESFire-based. In fact, none of the *Pays can emulate Oyster.
MST requires the phone to be woken, and Samsung Pay activated, since it's then actively broadcasting card data to whoever's listening.
Biting the hand that feeds IT
