…VLC (Visible Light Communication) can transfer data by means of light. The light can be emitted by an LED or a fluorescent tube and has to be received and converted by a photo detector for example a smartphone camera. The lamp “flickers” in a way that humans don’t recognize it and that way…
…Indoor navigation, that is to say navigation inside enclosed buildings, faces some challenges: GPS signals cannot be received here, because there is no visual contact to GPS satellites. But there are alternatives for indoor positioning, for example via Wi-Fi, beacons or VLC (visible light…
…Modern smartphones have multiple sensors, which can be combined to get a more precise indoor positioning result. Using vertical sensor fusion has one big advantage: combining various sensors results in a more homogenous and more reliable outcome than using just one type. Most smartphones have the…
…NFC (Near Field Communication) is a radio technology used for wireless transmission of data at short range. The range is maximum 10 meters. That is why NFC is suitable for cashless payment systems and access systems – unlike Bluetooth. Otherwise, NFC can complete Bluetooth applications, since it…
…If you want to use the Global Positioning System (GPS) you need visual contact to several satellites, which is not always given. In outdoor areas it can be interrupted by trees, clouds, tunnels or skyscrapers. Indoors there is hardly a chance to receive GPS signals. But there are multiple…
…With Google and Apple two big players of the internet industry have entered the indoor navigation market. Are their applications already market-ready? What are the pros and cons? Indoor navigation by Apple: Indoor Survey and iBeacons According to the media, Apple is building its own indoor…
…The Long Range Wide Area Network (LoRaWAN) is a low power radio system designed for IoT devices. It is characterized by a high reception range between the transmitter and receiver of approximately 2.5 kilometers in the inner-city area. Furthermore, short, bi-directional communication thrusts are…
…With Google and Apple two big players of the internet industry have entered the indoor navigation market. Are their applications already market-ready? What are the pros and cons? Indoor navigation by Google: Indoor Maps, Eddystone and Project Tango Google itself writes about Indoor Maps: “View…