A system and method for facilitating electronic transactions using a biometric are disclosed. The system for facilitating electronic transactions using a biometric comprises a smartcard-reader transaction system. The method comprises determining if a transaction violates an established rule, such as a preset spending limit. The method also comprises notifying a user to proffer a biometric sample in order to verify the identity of said user, and detecting a proffered biometric at a sensor to obtain a proffered biometric sample. The method additionally comprises verifying the proffered biometric sample and authorizing a transaction to continue upon verification of the proffered biometric sample.