Tools · Productivity
Emergency Card
Optional contact fields become a QR code in your browser. This is not an official ID, insurance card, or medical record.
Privacy warning: anyone who scans this code can read every field you enter. Do not add identity numbers or medical details. DevNestro does not store the card.
Optional fields
Encoding uses the same local QR library as the QR Code Generator. Nothing is uploaded. API: None.
How to make a card
- Read the privacy warning.
- Fill only fields you are willing to show a stranger.
- Generate, then decode and verify.
- Download PNG or PDF and reprint when a number changes.
FAQ
Can anyone who scans it read my details?
Yes. Treat the printed code like a card held up in public.
Is this an official ID?
No. It is a contact card you printed. It is not identification, insurance, or a medical record.
Why are there no medical fields?
Medical details do not belong on a code that anyone can scan. The note field is free text if you still choose to add a short line.
Is the card stored on DevNestro?
No. Encoding stays in your browser.
What does verify do?
It reads the preview back and checks that the text matches what was encoded.
Read the original guide: A scannable card that anyone with a camera can read.