Abstract: A software library could be called by an ecommerce application on a mobile phone to improve security of the transaction. When a human user wishes to purchase a product through the ecommerce application, the software library could present a passkey, such as a unique word, phrase, image, sound, or song, which is only recognizable by the human user. The human user authenticates the passkey by recognizing the passkey as the one he/she designated, and then authorizes the payment for the product, preferably through a passkey of his or her own, such as a password that the system recognizes.