Quote from: grue on April 04, 2012, 12:32:52 AM

but then the smart card will need an internal power source, which will definitely not fit in a card.

Timing mechanisms:
1. Capacitor:
* Not a full power supply, could keep it running for those 30-90sec or at least enough for you to pull the card out.
* Just before it runs out it unlocks the card.

2. Clock:
* While the card has power from the terminal it counts chip cycles.
* The time from giving PIN and pulling the card will only be half the necessary waiting time.
* The other half will be counted down in the next terminal used at another merchant.
* This adds maybe 10s of waiting time when you start to use your card.
* This waiting can be mitigated by slotting in the card while the cashier is scanning your wares.

I believe that solves things?

BitCoinAndie:
1. I don't think new supercards are the way, at least right now - as it has been said we don't want to have to train people in new tech + they may be expensive hindering BTC market penetration.
2. For the paranoid super users it may be an option though - our protocol should just allow for communication with both types of card.
3. One-time codes are safe, but I don't think it is practical without super cards - which I again do not see as an option.

Quote

Using Greece as an example, food and beverage distributors who can link into their regional supply chains (Europe) as well as local retail distribution would probably make a lot of sense [EDIT: As a third market].

I think I kinda mentioned it in my second market ("businessmen"), but yes definitely a good way to go.

I think a "third generation" market would be something like my grandma using it.

First market would be "converts" and BTC dependent business start-ups (run by converts).