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Wi-Fi is a technology that enables personal computers, smartphones, gaming consoles, and digital audio devices to connect to the internet wirelessly within a network area. Wi-Fi access points can cover small areas like a room or extend to several square miles, providing internet access.
A unique national identification number is the most secure way, but some countries lack such numbers or do not show them on identity documents. In the absence of an explicit identity document, other documents such as driver's license may be accepted in many countries for identity verification .
The biggest impediment to BCI technology is the lack of a sensor modality that provides safe, accurate and robust access to brain signals. The use of a better sensor expands the range of communication functions that can be provided using a BCI. Development and implementation of a BCI system is complex and time-consuming.