You can use a specific type of QR code, called a static QR code, without needing a WiFi connection.
Here's a breakdown:
Static QR codes work because all the information they contain is directly encoded within the QR code image itself. This means that when you scan the code, your device reads the information directly without having to retrieve it from the internet.
However, it's important to understand the limitations:
- Data is Embedded: Static QR codes contain information such as text, contact details, or simple instructions directly encoded within the QR code image.
- No Editing After Creation: Once a static QR code is created, the data cannot be changed. If the information changes, you'll need to create a new QR code.
- Web Links Require Internet: If the static QR code encodes a website URL (a web link), then you will need an internet connection to actually open that website in your browser after scanning the QR code. The QR code only provides the address; your browser needs the internet to retrieve the page.
Example Scenarios where WiFi isn't Needed (unless it involves opening a web link):
- Contact Information: A QR code that, when scanned, populates a contact card on your phone with someone's name, number, and email.
- Plain Text: A QR code containing a simple message like "Turn right at the next corner."
- WiFi Password: While ironic given the context of the question, a QR code containing WiFi credentials can be scanned offline to populate the fields, then you would turn on WiFi and connect.
In Summary:
You can use a static QR code offline as long as the information encoded within the QR code doesn't require an internet connection to be accessed or used after scanning. Be mindful that if a static QR code encodes a website URL, you will need internet access to visit that URL.
