// Select one of the cards if (!mfrc522.PICC_ReadCardSerial()) return;
void loop() if (!mfrc522.PICC_IsNewCardPresent()) return; if (!mfrc522.PICC_ReadCardSerial()) return; rc522 proteus library updated
Search for MFRC522_Updated_v2.1.zip . The package should contain: // Select one of the cards if (