Typical parameters useful to geolocate the wireless access point include its SSID and MAC address. The most common and widespread localization technique used for positioning with wireless access points is based on measuring the intensity of the received signal ( received signal strength indication or RSSI) and the method of "fingerprinting". Wi-Fi positioning takes advantage of the rapid growth in the early 21st century of wireless access points in urban areas. Such systems include assisted GPS, urban positioning services through hotspot databases, and indoor positioning systems. It is used where satellite navigation such as GPS is inadequate due to various causes including multipath and signal blockage indoors, or where acquiring a satellite fix would take too long. Therefore, the acquisition of a complete solution by infsoft provides a good alternative.Wi-Fi positioning system ( WPS, also abbreviated as WiPS or WFPS) is a geolocation system that uses the characteristics of nearby Wi-Fi hotspots and other wireless access points to discover where a device is located. However, in most cases the existing infrastructure isn’t sufficient for reliable localization with room accuracy and the infrastructure extension (additional supported access points, location engine of the access point provider) can be cost-intensive. Third-party providers can access the data via an interface. The access points receive the signals emitted by the mobile Wi-Fi tags and make the data available to the infrastructure provider’s location engine in order to calculate the position. In this scenario, the logic mapping is performed at access point level. In the second setup, smart access points with location engine are used. The existing Wi-Fi access points only transmit signals and there is no special configuration required. Using this setup, the logic for calculating the position is mapped directly on the Wi-Fi tag or in the backend. The position of the tag is determined based on RSSI (received signal strength indication). The tag receives signals from multiple Wi-Fi access points and forwards the information via Wi-Fi to a backend. In the first setup, smart Wi-Fi tags that act as a client are applied. To realize this, mobile Wi-Fi tags can be attached to assets or are worn by people in the form of wristbands. There are two setups that enable Wi-Fi positioning based on an existing infrastructure.
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