Use of wireless technology has become almost ubiquitous among small and medium-sized firms, according to a survey by the Institute of Directors (IoD). Wireless access to email has grown from six per cent to 94 per cent since 2004, use of WiFi hotspots is up from five per cent to 68 per cent, and use of Bluetooth connections has risen from five per cent to 62 per cent. Such dramatic rises are part of the increasingly central role of technology: 87 per cent of respondents want to grow their business and, of those, 85 per cent see technology as crucial to achieving this. But security arrangements remain patchy, and although 71 per cent of respondents cite business continuity as a primary concern, 11 per cent back up data less than once a week.