4 ms·
Well they were pretty crap. There was a metalised bit of plastic for the card and the reader burned certain bits of the plastic to gate the light. If you bought
by batou 11y ago
Well they were pretty crap. There was a metalised bit of plastic for the card and the reader burned certain bits of the plastic to gate the light. If you bought a £5 card you could cut a hole in it, fill it up with epoxy and use a permanent marker to fool it into thinking you had a £20 card :)
Edit: my memory is faulty; they were units, not £. Been a long time :)
- davb 11y agoI remember these! A quick Google yields the following, with an example of the reader mechanism http://www.telephonecardcollector.com/optical-cardphone-payphone.htm http://www.telephonecardcollector.com/optical-cardphone-payp... A touch of nostalgia there.
- batou 11y agoThat's the ones! Never seen inside one before - thanks for posting!