US Patent 7552869 Financial check with an electronic ink display

A reusable financial check includes an electronic ink display. The electronic ink has magnetic properties enabling magnetic reading of check information, such as an account number and a bank routing number. The check can be read by an ATM and the check amount accepted for deposit. The ATM includes an imaging device that can digitally capture images of the check. The ATM is also able to reconfigure the electronic ink to cancel the check and return it to the customer for reuse. The ATM further includes an electronic check template enabling the generation of reusable electronic ink checks. An electronic pen enables a check holder to write information (e.g., a check amount) on a blank electronic ink check.