People that have life threatening allergies or medical conditions rely on things to let paramedics and doctors know what is wrong with them if they should be unable to respond. Many rely on bracelets, but a bracelet that says allergy does not often say enough to help. A Japanese firm called Asahi Kasei has a new product that is in the works that will be much more helpful.

The product is a small, 3cm square that has a RFID chip inside. That chip can store all sorts of details medical data along with links to other files like x-rays that doctors and paramedics can access by holding an RFID enabled smartphone or computer nearby.

This allows the doctor access to a full medical history even if the patient can’t speak and no one is available to help. The devices are expected to hit the market in the next year at about $25 per unit. The squares use FeliCa technology inside that is already supported by a number of RFID reading devices on the market.