IMSI Catcher Vehere's IMSI Catcher is a system to trace cellular data (IMSI, IMEI, TMSI) for 2G, 3G and 4G technologies in a specific locations (airport terminals, prisons etc.). It has the capability to locate the phone. Other Productsfor GSM Monitoring Passive GSM Monitoring Vehere's Passive GSM Monitoring System is designed for analyzing of communication sessions as well as service information circulating in cellular GSM network A5/0 without encryption or networks with A5/1 and A5/2 and A5/3 encryption. It monitors all channels over the GSM 900MHz and 1800MHz spectrum [2G, 3G and 4G] and is able to receive, decode, decipher, store and display/playback voice and SMS from the GSM network. The system does not interfere with the external cellular networks GSM Decryption Vehere's GSM Decryption System is a state-of-the-art decryption unit for GSM cellular telephone catering to A5/1 and A5/2. These deciphering units are specialized software (A5/2) and hardware (A5/1) intended for calculating an encryption key (Kc) of a GSM session, with an average deciphering time of around 500 msec. It has an API available for integration.