Understand the idea
A QR code can encode a URL or payment instruction. A sticker placed over another code can redirect a user to a different destination.
Put it into practice
Preview the decoded destination before opening it. For payments, verify the displayed recipient and amount through an independent source.
Know the limits
A printed logo beside the QR code does not verify the encoded destination.
The wider context
Pause when a message creates urgency or asks for a secret. These notes focus on recognizing common warning signs and preserving evidence. They do not certify an operator or replace professional incident assistance. Report concerns through the affected service’s verified support and relevant local channels.
Your next step
Use the practical step above only where it fits your situation. Before an account-specific action, check the current instructions from the service or device provider involved. Write down what you observed and what remains uncertain; that makes a follow-up question more useful.