This technology uses the human body as a key. This means that parts of your body can be used to give you access to certain areas. Our bodies are each extremely unique and this will mean that you will have your very own unique key. In the early days of fingerprints, it was considered that our fingerprints contain our entire identification and this is completely true. The fingerprint is also extremely reliable, but sometimes it may let you down. This will all rely on the quality of the scanner and the software. Some consider the keypad to be part of this system, but even though it is a step in the right direction and a positive in terms of moving forward with technology, it still isn’t the perfect definition of this technology.