According to a notice issued by JKR, North-South Highway toll from Penang to Johor will support RFID from January 15, 2022. Each toll station will have at least one lane which support RFID.
If your vehicle does not have RFID tags installed yet, you can simply purchase it through Lazada and install them on the headlights of your car by yourself. The installation method is very simple, just paste RFID tag sticker on car headlights and link it to Touch ‘n Go e-wallet to activate your RFID tag.
When you arrive at a toll, the system will automatically read the RFID tag information and deduct the toll from your Touch ‘n Go eWallet.
Here is the Lazada link to purchase RFID tags: https://invol.co/cl7ztn9