The Impro door control systems that we install at client premises can handle from one to eight doors for up to a 100 tag holders and as many as 5000 buffered transaction applications. The Impro door control systems have up to 16 readers and can handle up to three tags per individual and as many as eight tag holder access groups. Whether for a medium or large office building, the modern design fits in well with the corporate environment. The Impro door control systems, known as the IXP20 range, come with either the user-friendly touch screen solution with easy installation features or the more sophisticated network based system. The security offered by the Impro door control systems is excellent featuring AES 128 bit encryption together with the Diffie Helman Key Exchange feature, which makes it almost impossible to bypass or crack the code.