A user has held cryptocurrency in a Tangem wallet card for two years without incident. The card has survived water exposure, been dropped several times, and remained readable through daily tap-to-phone authentication. Then one morning, the tap produces no response. The NFC chip no longer communicates with the mobile device. The private keys are still …
Continuer la lecture « The Tangem Wallet Achilles Heel: What Happens When NFC Stops Working? »