Device effective to modulate a code and to provide content to a user

摘要

A system and method effective to provide content to a user. The system may include a sound device, a smart phone, and a processor. The sound device may output a modulated code. The sound device may include a processor effective to generate a periodic wave based on a code and a speaker in electrical communication with the processor. The speaker may output the modulated code based on the code. The smart phone may receive and demodulate the modulated code to reproduce the code. The smart phone may send the code to a processor. The processor may receive the code, determine content associated with the code, and send the content over the network to the smart phone. The smart phone may further receive the content and display the content on a display.