IIRC, when I lived on the East Coast in the 90's, Exxon was a pioneer with contactless payments. They had a little round thing that looked like a quarter of a pencil that you could put on your keychain to make payments at the pump.
I also remember this in Canada in the late 90s. ESSO had such a device. I think other stations (Shell, Petro Canada) also did.
Tried this last month, and it totally didn't worked. Tried 3 times and even went in to the cashier twice, who tried to figure it out. Never got it working.