Taxicabs of the United States area. The president of United Cab discourages his drivers from carrying firearms, instead advising them to accelerate the car and crash into a lamppost or even a police car if they are threatened with a gun. Uber is a major competitor to taxi companies, providing on-demand for-hire car service through a smartphone app in many US cities. Uber services are generally treated as black-car services from a legal standpoint and are not generally regulated under Taxi laws. This can cause friction with both local governments and taxi companies. In June 2015, the city council voted unanimously to increase taxi fares;
Smartphone real-time operating system which operates the radio and other hardware. Research has shown that these low-level systems may contain a range of security vulnerabilities permitting malicious base stations to gain high levels of control over the mobile device. A mobile app is a computer program designed to run on a mobile device, such as a smartphone. The term "app" is a short-form of the term "software application". The introduction of Apple's App Store for the iPhone and iPod Touch in July 2008 popularized manufacturer-hosted online distribution for third-party applications (software and computer programs) focused on a single platform. There are