Passwords are used in things like cellular phones, ATMs, personal computers, or Internet access. But, there is a problem. Passwords for non-accessible to other people, must be unique, include dictionary and #% does not exist, such as using @ or symbols. Apart from this, for security, the password is not written.
Others will never access and have to change at least every three months of door access system Singapore. The answer is to identify the person, human beings reject physical characteristics such as face structure or voice. Biometrics, which is the science of compiling and measuring physical aspects, now also understand many characteristics as unique twins examples include Iris, fingerprints, and nerve structure.