Walking to work this morning a disturbing thought hit me. I was listening to my MP3 player, thinking how great technology is because I've got my mobile phone and Blackberry for email. Then I realised it simply makes me more available for work, becoming a further intrusion on my time outside of the confines of the office.

More importantly I realised I am a walking radiation hazard. In fact we all are. How the hell can a tiny phone broadcast a powerful enough signal to reach a local cell tower or satellite? The same goes for the Blackberry. It sits in its cradle on my desk next to a speaker and makes that annoying crackling buzz every 5 minutes. That's radiation. And it sits in my jacket for my journey to and from work each day. Even more worrying is my mobile, which tends to sit in my trouser pocket for large amounts of the day. Worse still is everyone else is the same. We are all walking time bombs. Even if you are a techno-phobe who eschews all mobile technology, you are subjected to "passive" radiation, just like smoking. Perhaps it will lead to mobile free zones, where lead-lined walls will prevent radiation just like there are smoke free pubs. One can dream and hope.

It's amazing I don't glow green at night.