WiFi jammers are specifically used to interfere with WiFi signals and block unsafe network connections. Many users tend to choose public WiFi to connect when making payments, which makes their payment information vulnerable. By using  wifi scrambler  in the payment area, users can be prevented from connecting to unsafe public WiFi, prompting them to use a safer network environment when making payments. https://www.jammermfg.com/full-band-22-antennas-powerful-cell-phone-jammers-blocking-wifi-gps-5g-4g-3g-2g-uhf-vhf-signals.html