QR codes: choose the content and check the destination
QR codes make it easy to transfer information to a phone without typing it. Start with what the recipient needs, then scan the code and check its destination before sharing. Readability and link trustworthiness are separate checks.
Choose what belongs inside the code
QR codes can carry information such as text and links. DENSO WAVE describes their use for quickly storing and reading information. For an everyday task, encode the shortest useful content: the intended page URL, not an unnecessarily long address containing private data.
References: DENSO WAVE — What Is a QR Code?
Before printing, test the visitor’s journey
Scan the final design at its actual printed size, not only an enlarged image. Try ordinary lighting and another phone when possible. Check that the destination works without your own login and is readable on mobile.
A temporary link can suit short-lived sharing, but not a sign intended to remain for months. The code can still scan after its destination has expired. Include a readable address or alternative contact method nearby.
When scanning, inspect the address first
Check the domain for changed letters or misleading spelling before opening it. The FTC warns about replaced QR codes and messages that pressure recipients to act. If unsure, visit the organisation’s known website independently.
- A short link conceals a longer destination; it does not certify safety.
- Do not print passwords or private access links in a public QR code.
- An official-looking sticker is not sufficient reason to download software or enter payment details.
References: FTC — Scammers Hide Harmful Links in QR Codes
Example: a one-day workshop card
Create a card with the workshop title, a QR link to the materials and a readable address below it. Open the destination while signed out, then scan the printed card.
If the materials expire after a week, say so on the card. A permanent student handbook needs a lasting destination, not a temporary recovery link.