GPS Tracking System:
GPS trackers connect to a series of satellites to determine location. The tracker uses a process called trilateration which uses the position of three or more satellites from the Global Navigation Satellite System (GNSS) network and its distance from them to determine latitude, longitude, elevation, and time.
VOIP:
Voice Over Internet Protocol
It is a technology that allows you to make voice calls using a broadband Internet connection instead of a regular (or analog) phone line. Some VoIP services may only allow you to call other people using the same service, but others may allow you to call anyone who has a telephone number - including local, long distance, mobile, and international numbers. Also, while some VoIP services only work over your computer or a special VoIP phone, other services allow you to use a traditional phone connected to a VoIP adapter.
Fingerprint Scanner:
A fingerprint scanner typically works by first recording fingerprint scans of all authorized individuals for a particular system or facility. These scans are saved within a database. The user requiring access puts their finger on a hardware scanner, which scans and copies the input from the individual and looks for any similarity within the already-stored scans. If there is a positive match, the individual is granted access.
Fingerprint scanners most commonly use an individual's thumbprint as identification.
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