half a lie. This is no “right” way. There is, however, the best way depending on your situation. • I sign into many diﬀerent websites daily. As such, I consider myself an expert. • The goal is to present the options, their benefits, and shortcomings.
while requesting privileges to data through providers (e.g. Facebook Graph API). • Credentials are le" in the hands of the provider. If they’re compromised, you’re compromised. • Easy to oﬀer too many options and raises privacy concerns. • There are three diﬀerent versions in use.
limited to) fingerprint or retina scanning, facial or voice recognition, or a signature. • In theory, identifies an individual and cannot be replicated. • Expensive, diﬀicult to implement, young, and o"en times easy to exploit.