one aspect to consider is the car windscreen tilt angle wrt the smart tag source transmitter. the greater the difference, the less efficient the IR signal reach the tag. if the tilt is so great until the critical angle breached, total internal reflection will occur, nothing will reach the smart tag when that happens. fiber optic operates in this principle. of course, windscreen material etc. all affect the IR diffraction...

Definitely agree that 3M CR70 affects Smart Tag usage. Previously using Huper C70 no issue at all, recently changed windscreen and used 3M CR70, immediately failed 2 out of 3 tolls (karma sial... i always used to curse those who get stuck during jam. sorry in advance ya). I think the key is to drive very, very slow (almost to a halt) and must somehow catch the G-spot. I'm still experimenting, any advise from sifus will be greatly appreciated.

However, I believe you will also feel the difference in heat resistance, 3M CR70 seems somewhat better.

My car on cr70 front cannot pass using smart tag. So what I do all the while is to use the rare mirror space on windscreen to let the smart tag to detect the toll sensor then only can

Where can i get 3m crystaline and with good price ?

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This post has been edited by cmk96: May 11 2017, 06:30 PM

After installing the 3M tinting CR70 on the wind and rearshield for 4.5 years, the windshield fails the JPJ standard of 70% visibility while I had my vehicle checked at Puspakom. The result shows 54% visibility only.

This is just to share if anyone is interested in the result post years after installation. Does anyone have a similar experience?