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.