Come, let us hasten to a higher plane,
Where dyads tread the fairy fields of Venn,
Their indices bedecked from one to n,
Commingled in an endless Markov chain!
—Stanislaw Lem, Polish author of science fiction, philosophy, and satire, from The Cyberiad (1965)
Different methods of authentication are not considered equal. The static passwords that still enable access to many Internet services are considered a relatively weak authentication mechanism. Several stronger forms of authentication ...