I've been washing my own car and the sticker is still there. Just don't go crazy washing the windows.

This is not an official answer, but I don't think you should use any layer on top of the RFID sticker.

You need to call TnG customer service and ask for RFID customer rep. It can't be done by app or e-mail. Hope this helps.

Definitely reliable, it's been on my car for around 2 years. I was testing on Sungai Besi Expressway RFID/Smarttag lane last week and it still works

You buy it and install on the left headlamp or left side on the outside windows. I have it on the left side of my windows outside. My only comment is try to never peel the sticker or scrub the area when you wash your car.

This post has been edited by LemonKnight: Aug 31 2021, 03:56 PM