The device includes five buttons on the face of a card and a paper-thin flexible display. The display hides a portion of a cardholder's payment card number. To turn the device ON, a user must enter a personal unlocking code into the card. If the user enters in the correct unlocking code, the card will then visually display the user's payment card number so that the user can read the number for online transaction. The magnetic stripe is then populated with the correct magnetic data such that the card can also be used with magnetic stripe readers. After a period of time, the display turns OFF and the Electronic Stripe® erases itself - thus removing all critical payment information from the surface of the card. If the card is lost or stolen, the card is essentially useless.