Tower of London | Eiffel Tower | Tower of Power | Tower Bridge | Tower Records | Tower | Leaning Tower of Pisa | Willis Tower | Tower of Babel | Martello tower | U.S. Cellular | CN Tower | Blackpool Tower | tower | Lieutenant of the Tower of London | John Tower | Idea Cellular | Tower Hill | St Lucian Tower | Bell tower | The Dark Tower (series) | The Dark Tower | Sather Tower | Lincoln Memorial Tower | Cellular respiration | tower house | Tower City Center | Tokyo Opera City Tower | The Shang Grand Tower | Sun Tower |
Shortly thereafter, he launched Mexens Technology, Inc. and created Navizon, a wireless positioning system for handheld devices that triangulates signals from cellular tower and/or Wi-Fi access points to pinpoint the user’s location.