• Select Direct Debit at Checkout to go to the payment/membership options gateway. The Institute of Intelligent Infrastructure Technologies (i3t) represents employers and individuals who work in the Digital Infrastructures and Data Transfer Systems Installation Industry. This industry is one in which effective ‘connectivity’ is key, especially when considering that almost all sectors contributing to the GDP of UK plc (energy production distribution and control; business and financial services; manufacture; passenger and freight transport; healthcare; retail and wholesale; sport; hospitality), and the design, construction and operation of buildings and structures that facilitate a large range of these sectors rely on the industry for effective and efficient data transfer, communication control and maintenance