Apparatus for transmission of communication; Computer software, namely, an application allowing sales and field service employees to update and receive data stored in an enterprise's computer databases in real time, using a mobile device, with full telephony integration with the telephone and/or software features of the mobile device; Electronic transmitters and receivers for detecting the location of mobile devices and triggering location-specific digital communications to such mobile devices; Proximity sensors; Software for enabling the mobile applications of others to detect, analyze, and act upon the location of mobile devices within brick-and-mortar retail, shops, museums, fairs, and stadiums which will also allow others to use the location of mobile devices within brick and- mortar retail, stores, museums, fairs, and stadiums to customize targeted or personalized communications; Wireless communication devices for transmitting images taken by a camera; Wireless communication devices for voice, data or image transmission; Wireless POS (point of service) devices; Wireless transmitters and receivers