Here's a link to a very interesting slide deck on mobile by Volker Hirsch he recently presented at the Forum Oxford Future Technology conference. A number that, I have to admit, only struck me afterwards is on slide 4:
- Number of toothbrushes in use: 2.25 billion
- Number of mobile phone subscribers: 4.6 billion
I assume the number of mobile phone subscribers is the number of subscriptions worldwide and as many people these days have more than a single subscription / SIM card, the actual number will be lower. But still, there seem to be more people on this planet with a mobile phone than a toothbrush!? That's a bit shocking. Mobile phones with built in toothbrushes? Anyone?