Mobile wallets use QR codes for quick transactions but may be removed by marketplaces. Desktop wallets offer complete control but are vulnerable to malware. Hardware wallets provide highest security but are difficult to use on mobile
Firewall authentication verifies user identities for network access. Acts as a gatekeeper, preventing unauthorized network entry. Protects network infrastructure and data confidentiality
MFA requires two or more forms of authentication for account access. Microsoft Authenticator app provides two-factor verification. Password is easy to lose or steal, making MFA more secure
Steam QR Code enables quick and secure account login through mobile app scanning. QR code changes every 30 seconds for enhanced security. Two-factor authentication adds extra protection layer
External devices proving computer access for personal use. Provides physical two-factor authentication stronger than software. Protects online accounts and sensitive data
QR code is a square barcode storing information as pixels. Created by Denso Wave Inc., originally used for website links. Can be scanned by smartphones to display text and images