SOYAL recently upgrade QR Code controller AR-837-EL and AR-888-UL firmware to support the new QR Code format.
The new QR Code format includes Card ID / Start and Expriry Date / Floors.
The 3rd software can easily develop their visitor software to generate the new QR Code for the visitor to scan it via SOYAL QR Code devices to get access both at entrance and on elevator floors.
Product information
RFID QR Code LCD Access Controller
RFID Dual band WG&QR Code Reader