System for embedding an identification code in a phone call via an inaudible signal

A computer-implemented method for transmitting an identification code in a telecommunications system via a data processing system in a mobile device connected to a wireless network, the mobile device comprising a processing device and a memory comprising instructions which are executed by the processor, the method comprising:

• connecting a telecommunications call between the mobile device and a sending mobile device;
• receiving an inaudible signal from the sending mobile device as part of the telecommunications call, the inaudible signal being ultrasonic or infrasonic;
• decrypting the inaudible signal to determine an identification code embedded in the signal;
• and
• providing an alert to the decrypted identification code.

A mobile device configured to connect to a wireless network to conduct a telecommunications call with a receiving mobile device, the mobile device comprising:

• a EUDCIC manager configured to decrypt a received identification number in an inaudible signal, the inaudible signal being ultrasonic or infrasonic;
• and
• input/output devices for facilitating the telecommunications call, comprising a microphone, a speaker, and a user interface,
• wherein the identification number is associated with a sending mobile device for determining information about the sending mobile device, and
• wherein the EUDCIC manager is configured to display an alert via the user interface based on the decrypted identification number.