Asset tracking refers to the method of tracking physical assets, either by scanning barcode labels attached to the assets or by using tags using GPS, BLE or RFID which broadcast their location. These technologies can also be used for indoor tracking of persons wearing a tag.
GPS asset tracking
Assets may also be tracked globally using devices which combine the GPS system and mobile phone and/or satellite phone technology. Such devices are known as GPS asset trackers and are different from other GPS tracking units in that they rely on an internal battery for power rather than being hard-wired to a vehicle’s battery. The frequency with which the position of the device must be known or available dictates the quality, size or type of GPS asset tracker required. It is common for asset tracking devices to fail due to Faraday cage effects as a huge proportion of the worlds assets are moved via intermodal containers. However modern tracking technology has now seen advances in signal transmission that allows enough signal strength reception from the GPS satellite system which can then be reported via GPRS to terrestrial networks.
Mobile phones are personal devices. Asset tracking apps for smart devices had been used as a means of personal tracking and rescues. For example, Find My iPhone is an app and service provided by Apple; it was used in rescuing a missing person in deep ravine from a car accident after other attempts failed. There are also tracking apps combined with viewing functions used as a surveillance similar to FAA’s Automatic dependent surveillance – broadcast