magnetic ink

Vending machines, for one, are sensitive to these magnetic inks and use them to detect counterfeits.

With a flourish of a pen that laid down glittering magnetic ink, he signed the contract.

The invention was an automatic scanner used by banks for sorting checks printed in magnetic ink.

The ink used in the printing is a magnetic ink or toner, usually containing iron oxide.

He ran his thumb over the ship's data chip as though he were trying to make sure the magnetic ink didn't come off.

I canceled the zoom and looked back at the thirty-two squares etched into his skin with magnetic ink.

They also produce magnetic inks and slurries used in the production of magnetic stripe cards.

Some banks gave tellers scanners to determine if the account number at the bottom of a check is printed with magnetic ink.

They might, for example, be mixed with pigments to make magnetic inks for colour printing.

The bill acceptor cleaning card was redeveloped to contain magnetic ink and bank note characteristics so as to be accepted by the equipment.