Cell phone blocker in classroom , cell phone blocker in car
Utimaco DRS (Data Retention System) is very nice system that works in a really cool way. You see, the company uses it in order to monitor cell phone and wireless internet networks in a large scale. Yet the integration and implementation of their product is quite impressive one because they are not using it directly. And I guess this is their main advantage.
Utimaco company says that it does not sell any collected data to the telecom companies and marketing agencies. They are not lying, yet they are cheaters. They sell their product to the manufacturers of network equipment, who uses it in their products and with them the data gathered by Utimaco DRS gets to the final customer - telecom and marketing companies.
In order to secure your self from being included in the advertising lists or even worse things you need to use Utimaco DRS jammer because this system uses CDMA, UMTS, GSM, WiFi and Bluetooth frequency bands to get what they need.