Can someone access your phone with a QR code?

Yes, scanning a malicious QR code can potentially compromise your device. Threat actors can use QR codes to redirect you to phishing websites that steal personal information or infect your phone with malware like ransomware or trojans. These codes can also be programmed to open apps on your device. To protect yourself, avoid scanning unexpected codes, verify the URL is secure (starts with https), and consider using antivirus software.