Originally, the merchant had a small clipboard-like device with a roller. They’d place the card down, and a special piece of paper on top of it, then run the roller overtop which would imprint the card numbers onto the paper. They’d save all these records and then mail them to the bank.
Then the information was contained in a magnetic strip like you see on the back of gift cards today which could be read by an electronic card reader when swiped.
Originally, the merchant had a small clipboard-like device with a roller. They’d place the card down, and a special piece of paper on top of it, then run the roller overtop which would imprint the card numbers onto the paper. They’d save all these records and then mail them to the bank.
Then the information was contained in a magnetic strip like you see on the back of gift cards today which could be read by an electronic card reader when swiped.
The magnetic stripe on the back of the card contains the card number, the name on the account, and some additional data. It’s read by a read-head similar to the ones in cassette tape players. The device that scans the card can make a phone call or Internet connection to the card processor, who knows how to charge your account.
Before *that*, the store would use a machine that imprints the raised numbers from the card onto a paper slip; then collect and turn those paper slips in to the bank to get their money.
Originally, the merchant had a small clipboard-like device with a roller. They’d place the card down, and a special piece of paper on top of it, then run the roller overtop which would imprint the card numbers onto the paper. They’d save all these records and then mail them to the bank.
Then the information was contained in a magnetic strip like you see on the back of gift cards today which could be read by an electronic card reader when swiped.
The magnetic stripe on the back of the card contains the card number, the name on the account, and some additional data. It’s read by a read-head similar to the ones in cassette tape players. The device that scans the card can make a phone call or Internet connection to the card processor, who knows how to charge your account.
Before *that*, the store would use a machine that imprints the raised numbers from the card onto a paper slip; then collect and turn those paper slips in to the bank to get their money.
The magnetic stripe on the back of the card contains the card number, the name on the account, and some additional data. It’s read by a read-head similar to the ones in cassette tape players. The device that scans the card can make a phone call or Internet connection to the card processor, who knows how to charge your account.
Before *that*, the store would use a machine that imprints the raised numbers from the card onto a paper slip; then collect and turn those paper slips in to the bank to get their money.
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