GSM technology
there GSM technology, Global System for Mobile Communications, historically known as " Mobile Special Group is based on a second generation digital standard for mobile telephony. In 1982, the CEPT (European Conference of Postal and Telecommunications Administrations) established the working group responsible for its definition.
The European Telecommunications Standard Institute (ETSI) has developed and specified GSM technology for 900MHz frequency bands and the variant that uses the range of 1,800MHz frequency which is referred to as the Digital Communication System or DCS. This standard is commonly used in Europe, the Middle East, Asia and Africa. The 850MHz and 1,900MHz variants are mainly used in the United States, Latin America and Canada.
there GSM technology was originally designed for "voice" communicationstelephony, for example. Subsequently, the GSM standard expanded. Thanks to the GPRS extensions (General packet radio services) and EDGE (Enhanced Data rates for GSM evolution),a GSM technology is now able to support the transfer of data into "packages" and higher speeds. Both modes are compatible with the "dial-up voice" mode of the GSM. They use the same frequency bands and antennae.
Applying this technology, let's mention the GPS tracker micro spy usb which works with the GSM network. The accuracy of this tracker varies from 5 to 10m, depending on where the person under surveillance is and the positioning of the GSM relay antennas. This tracker micro spy is a Material dSpying and high-performance surveillance, but it is also ideal for guarding against burglaries and car thefts. It works on all GSM frequency bands.
