Devices extending global positioning system capabilities to Android platforms are the focus. These units supplement or replace the internal GPS receiver found in many smartphones and tablets. An example would be a Bluetooth-enabled receiver paired with a phone for enhanced location accuracy in challenging environments.
The relevance of augmenting location services stems from various limitations inherent in integrated systems. Factors such as weak signal strength in urban canyons or reliance on cellular data for assisted GPS (A-GPS) functionalities can negatively impact performance. Historically, specialized applications like surveying, marine navigation, and off-road adventuring necessitated enhanced precision, driving the development and adoption of peripheral location modules.