A method for using a smartcard is provided. The smartcard may include a microprocessor chip, a button, a dynamic transaction authorization number, a Bluetooth low energy (“BLE”) device. The smartcard may also include a battery. The battery may be configured to power the BLE and the microprocessor chip. The smartcard may also include memory. The memory may be configured to store the dynamic transaction authorization number. The smartcard may also include a dynamic magnetic strip. The dynamic magnetic strip may include a digital representation of the dynamic transaction authorization number. The method for using a smartcard may include pressing the button. The method may also include transmitting an instruction to a smartphone for a request for a dynamic transaction authorization number. The transmission of an instruction may be in response the pressing of the button. The method may also include receiving a dynamic transaction authorization number from a smartphone.