Emergency information that helps a stranger help you, without oversharing

When someone is lost, confused or hurt, the person who finds them usually needs two things: who to call, and what to do right now. That's the job of an emergency QR code. It isn't a replacement for 911, 999 or 000, for a medical alert bracelet, or for the records paramedics already use.

We look at caregiver contact pages for people living with dementia, wristbands for kids at crowded events, and cards for older adults who travel alone. The hard question is always what to leave out. A diagnosis, an insurance number or a home address can do real harm if the wrong person scans the code. Often a first name, a caregiver's phone number and one plain instruction are enough.

We'll also cover the offline backup. Phones die and signals drop, so every emergency code should have a printed version of its most important line right next to it.