Low size sensor with abilities to sense vibrations and movement with very high lifetime battery. Taking advantage of Bluetooth Low Energy (BLE) technology is possible to reach long range communication with very low power consumption.
The perfect solution to identify and trace the records of people who are around workers inside a factory plant. The information is stored and can be viewed to check who was in contact with whom during a period of time. In addition, the range can be changed to wide or narrow the record area around someone.