KeyDecoder is an Android app developed by FrenchKey that allows users to decode their mechanical keys using their smartphone or tablet. With just a few simple steps, you can easily decode your keys in a matter of seconds.

To use KeyDecoder, simply place your mechanical key on an ISO card, such as a loyalty card or transportation ticket. Take a picture of the key and place your features on the picture. In less than a minute, the app will decode your key with a precision of 0.1mm or less, depending on the quality of your pictures, lighting, angle of view, and the precision of the ISO-sized card used as a dimensional reference.

KeyDecoder is a true key decoder for standard keys and offers a convenient and accurate solution for decoding keys. The best part is that it's completely free to use. The app is published under the Aladdin Free Public License, allowing users to use, modify, and distribute it freely. The source code is available on GitHub for further details.

While the main intended use of KeyDecoder is for Pentesters conducting Physical Intrusion tests with a legal contract, it can also be useful for individuals who want to avoid the unwanted duplication of their keys. Just like passwords, keys should be treated with care and not shared or left unattended.

KeyDecoder is a valuable tool for anyone in need of key decoding and provides a simple and efficient solution. Download it today and decode your keys with ease.