Described in an example embodiment herein is an apparatus comprising an input device and a processor communicatively coupled with the input device. The processor employs asymmetric encryption to provision the input device with a terminal master key. The processor employs the terminal master key with a symmetric encryption algorithm to transfer a communication key to the input device. The processor obtains data representative of a financial account. The processor receives data representative of the personal identification number for authorizing a financial transaction with the financial account from the input device, the data representative of the personal identification number is encrypted with the communication key. The processor receives a request for a financial transaction associated with the financial account via the input device. The processor determines whether the financial transaction is authorized based on the data representative of the personal identification number received from the input device.