Demystifying Authentication Concepts in Smartphones: Ways and Types to Secure Access

Table 1

Synopsis of knowledge-based schemes.

Modalities	Authentication types	Usability pros and cons indicated	Security solutions or concerns reported
PIN [57, 60, 62]; password [53, 60]; pattern [60, 64]	One-shot; static; periodic; single sign-on; unimodal	[48, 52–57, 60, 62, 71, 72]	[58, 61–70]