The simple answer is, because it makes sense! What if you had an accident, how would people know who to contact? Yes, our phones have all of our friends and family details stored in them but how would someone actually find them? I don't know about you, but my phone needs a passcode to open it. Facial recognition or fingerprints are commonplace. So that rules your phone out of the equation! Carrying an In Case Of Emergency card in your wallet or purse is the simplest way of letting others contact your loved ones without any fuss or bother.
All these cards are bio-degradable and they measure 86mm by 54mm which is the same as a credit card (3.38 inches by 2.13 inches) so can easily be kept in a purse or wallet.
Lots of designs are available either with a photograph or without. If you have a design in mind that you can't see then that's not an issue. Just pop me a message over via the contact form and lets have a chat! My tagline is "Every Card Imaginable" for a reason!