Location of mobile user: If advertisements reach phone users in private locations, users find them more distressful (Banerjee & Dholakia, 2008) If the user is abroad the flat fee per month usually does not apply The situation in which ad reaches user – when advertisements reach users in work-related situations, they may be considered more intrusive than in leisure situations (Banerjee & Dholakia, 2008) The inability of mobile web applications to access the local capabilities on the mobile device can limit their ability to provide the same features as native applications. The OMTP BONDI activity is acting as a catalyst to enable a set of JavaScript APIs which can securely access local capabilities on the mobile device. Specifications and a reference implementation have been produced. Security is a key aspect of this provision to protect users from malicious web applications and widgets. In addition to the limits of the device, some limits should be made known to users concerning the interference these devices cause in other electromagnetic technology. The convergence of the Internet and phone, in particular, has caused hospitals to increase their mobile phone exclusion zones. A study by Erik van Lieshout and colleagues (Academic Medical Centre, University of Amsterdam) have found that the General Packet Radio Service (GPRS) used in modern phones can affect machines from up to 3 meters away. The Universal Mobile Telecommunications System (UMTS) signals, used in 3G networks, have a smaller exclusion zone of just a few centimeters. The worst offenders in hospitals are doctors. See also .mobi Mobile app Mobile application server Mobile browser Mobile dating Mobile publishing Mobile touch-responsive web design Wireless Application Protocol References External links Jo Rabin, mTLD Mobile Top Level Domain (dotMobi), Mobile Web Best Practices, 2 November 2006 Hoschka, Philipp, The W3C Mobile Web Initiative (MWI), W3C, 2005. W3C mobileOK Checker Internet Standards