The use of single-factor authentication can lead to unnecessary
					risk of compromise when compared with the benefits of a dual-factor
					authentication scheme.While the use of multiple authentication schemes is simply piling on more
						complexity on top of authentication, it is inestimably valuable to have such
						measures of redundancy. The use of weak, reused, and common passwords is
						rampant on the internet. Without the added protection of multiple
						authentication schemes, a single mistake can result in the compromise of an
						account. For this reason, if multiple schemes are possible and also easy to
						use, they should be implemented and required.