If you live in a big city, mass transit is a must.
In the past, fare is paid via tickets, tokens or magnetic swipe-cards. As municipalities look to streamline, many city transit systems have moved to stored-value cards. Like a gift card, for instance, they can be “charged-up” before use, but unfortunately, there’s no way of knowing how much value remains on your card.
Until, now:
This is what PERRY does, by laminating an e-ink display onto the card; the same flow of current through the radio-frequency antenna that energizes the card’s logic also updates the display. And since e-ink is “non-volatile” — the display only draws power during a change of state — the new value ought to be legible for weeks or even months thereafter.
How cool is that!?!
I wonder what other applications this technology may be used for in the future?
[via URBANSCALE]
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