Opens the [[map View|Map view]] and displays Points of Interest (POI's) related to the current location of the mobile device.
=== Positioning ===
The user can choose one of different positioning modes optimized for different environments.
Most of them incorporate multiple technologies for calculating positions or checking their reliability.
==== Positioning modes ====
* ''Outdoor mode'' - used for outdoor positioning
* ''LLA only mode'' - used for positioning using markers only
==== Technologies ====
===== GPS =====
GPS is used as a primary positioning input source for outdoor areas. Its precision depends on the environment and satellite availability. With good circumstances, the accuracy varies between 1 and 10 meters.
===== LLA markers =====
LLA markers basically are QR codes with location data encoded into them - which can be used for positioning when they are scanned.
===== Dead Reckoning =====
Dead Reckoning uses a device's magnetic & acceleration sensor in order to estimate the movement the device undergoes. This way, the current location can be calculated based on an earlier known location and the movement that happend in between.
===== Edge plausibility =====
An "edge" in this context means the description of a path section inside an area, e.g. a corridor in a building.
Since positioning is not perfectly accurate, a location candidate has to be judged whether it can be relied on or not. This can be done using an edge model describing the ways the device can possibly take. If the alleged position is, let's say, inside a wall, then it is probably wrong. Such an edge model can also be used for optimizing a wrong position by snapping it onto the nearest edge.
===== Speed plausibility =====
Another way to judge a position's quality is to check how fast the device would have to move in order to get to it from its previous location. If the necessary speed is too fast, the position is deemed implausible.
===== Object Proximity Positioning =====
The location of nearby Geo-Objects can be used for positioning.
The geo information of an object gets used automatically if exactly one single object is found through scanning. If more objects are found, their geo information doesn´t get used. Scanning includes [[UBIK Client Basics#ID Marker|ID Marker]], [[UBIK Client Basics#Bar Code|Bar Code]], [[UBIK Client Basics#QR Code|QR Code]], [[UBIK Client Basics#OCR|OCR]], [[UBIK Client Basics#RFID|RFID]], [[UBIK Client Basics#Markerless|Markerless]] and [[UBIK Client Basics#ID Marker 3D|ID Marker 3D]]. The automatic use of Geo-Object´s location can be turned off by disabling the "EnableObjectProximityPositioning" setting.
===== iBeacon-Trilateration Positioning =====
iBeacons are small, battery-powered devices, which are sending an unique identifier via Bluetooth Low Energy. iBeacons have to be mounted on known positions inside a building. If more than three beacons are in reach of the mobile device, the position of the user can be calculated.