I have now thought of using a reverse AUX cable Y splitter plus an AUX-to-Bluetooth transmitter module in order to get the blind user to hear the sounds through Bluetooth instead of the inconvenient AUX chords. The user will wear wireless Aftershockz bone conduction headphones to hear the beeps now. This will hopefully make this device less fussy to put on especially if it is a viable product for the market.

Furthermore, a friend of mine has helped me to create these custom CAD glasses out of PVC material embedded with the HC-SR04 sensors. Ultimately, the user will wear these glasses and the bone conduction headphones. The circuit board will be in a case in the user's backpack for portability. The bone conduction will turn on automatically with the press of a button on the Bluetooth module.

Here are more pictures of beta users trying on my whole device so far: