Apple buys Silicon Valley startup WiFiSlam to acquire indoor WiFi geolocation technology
March 26, 2013 // Julien Happich
Apple has acquired a Silicon Valley startup, WiFiSlam, which makes mapping applications for smart phones based on the triangulation of WiFi signals. The Wall Street Journal reported Apple may have paid around $20 million for the company.
WiFiSlam develops technology that provides indoor tracking and similar services. Big tech companies such as Apple and Google have been racing to provide more and better map applications for users. Google's application, Google Maps, is widely accessed on Google's Android platform and rival Apple's rival iOS platform.
The startup uses a combination of methods to get better indoor locations, such as using WiFi fingerprinting, or measuring the strength of the signal to get an idea of what the materials and construction of a particular building do to WiFi signals. With enough scans, users can get an accurate profile of a building that can be then be used to make a map. Slam stands for Simultaneous Localization and Mapping, at the core of WiFiSlam's way of gathering location and mapping information, without recording any data at all. WiFiSlam records 'trajectories’ from the phone’s sensors including the accelerometers, gyroscopes and magnetometers and combine them with WiFi signal strength data.
By aggregating the data of many paths walked by various users, a big database of paths and maps can be built for each building equipped with WiFi hotspots. Pattern recognition and machine learning algorithms are also blended-in to correlate the data gathered by all of the sensors in a device, and associate it with WiFi triangulation. Magnetometers can take magnetic field readings throughout a building, and again, the level of variance and details provided can be used to statistically map indoor locations together with the WiFi signals. All these sensors are already on-board Apple’s iPhone 5 and iPhone 4S. This could turn any iPhone user into a remote anonymous data aggregator, adding precision to future Apple indoor mapping services.All news
First color-tunable graphene-based LED is demonstrated
July 29, 2015
Researchers at Tsinghua University in Beijing have demonstrated an LED that can be tuned to emit different colors of light ...
Qualcomm enables wireless charging for mobile devices with metal cases
Intel, Micron launch "bulk-switching" ReRAM
Demand for radar systems boosts Infineonís chip production
'Test city' opens for autonomous cars
AMS buys environmental sensor business from NXP
July 28, 2015
AMS AG has acquired an environmental sensor business unit from NXP Semiconductors NV for an undisclosed amount of money. ...
MEMS force sensor in a chip-scale package begins sampling
World first: Samsung monitor integrates inbuilt wireless charging
Breakthrough for really cost-efficient fuel cells in sight?
- Dual Phase Buck Controller Drives High Density 1.2V/60A Supply with Submilliohm DCR Sensing
- Test environment for the positioning elements of wearable devices
- Automotive Circuit Protection using Littelfuse Automotive TVS Diodes
- Top 5 Challenges for testing Today's Consumer Electronics
InterviewGlobalfoundries' CEO on why FD-SOI and why now
With its latest news Globalfoundries Inc. has not only confirmed itself as a supporter of the fully-depleted silicon-on-insulator (FD-SOI) approach to IC manufacturing but that it also thinks sufficiently ...
Filter WizardCheck out the Filter Wizard Series of articles by Filter Guru Kendall Castor-Perry which provide invaluable practical Analog Design guidelines.
Linear video channel
READER OFFERRead more
This month, Novelda is giving away two full XeThru Inspiration kits worth 1499 US Dollars each, for EETimes Europe's readers to experiment first hand with its XeThru technology.Based on the use of radio waves, rather than infrared, ultrasound or light, the company's X2M1000 Inspiration modules can detect presence just from the chest movement while breathing, and measure both the rate and... MORE INFO AND LAST MONTH' WINNERS...
December 15, 2011 | Texas instruments | 222901974
Unique Ser/Des technology supports encrypted video and audio content with full duplex bi-directional control channel over a single wire interface.