In Search of Knowledge about Mobile Users

Mobile phones and other mobile devices are fast becoming indispensible in our modern society. According to a recent survey by Frank N. Magid Associates and Upoc.com, 59 percent of Americans age 12 and over (about 140 millions of them) own mobile phones, and that almost a quarter of non-owners plan to buy a mobile phone in the near future [1]. The sales of mobile phones worldwide was 385 millions in 2001 and it has been predicted to reach 675 million in 2006 [2]. In tandem to this growth trend, we also witness the emergence of many new applications and businesses that exploit mobile phone technologies in different ways [3,4,5]. Before other wearable computing gadgets become more feasible and popular, mobile phones are likely to remain as the more dominant wearable devices in the coming years.