3 ms·
> The cards have no battery and aren’t self-powered in any way. Instead, the reader on the gate emits an electromagnetic field that powers the card just long en
by reaperducer 2mo ago
> The cards have no battery and aren’t self-powered in any way. Instead, the reader on the gate emits an electromagnetic field that powers the card just long enough to complete the transaction.
Brillant!
AT&T showed this in television commercials back in the 1980's.
"Can you go through a toll booth without stopping? You will. And the company that will bring it to you is AT&T."
- toast0 2mo agoThe 90s https://en.wikipedia.org/wiki/You_Will https://en.wikipedia.org/wiki/You_Will Lots of those things happened (maybe not faxing from the beach), but AT&T didn't bring us very many of them.