See how this humble audio port finds new life in cutting-edge fields like medical diagnostics and accessible tech. Despite trends toward wireless and proprietary systems, the headphone jack proves that old tools still have new tricks. 

Jiang, H., Sun, A., Venkatesh, A. G., & Hall, D. A. (2017). An Audio Jack-Based Electrochemical Impedance Spectroscopy Sensor for Point-of-Care Diagnostics. IEEE Sensors Journal, 17(3), 589–597. https://doi.org/10.1109/JSEN.2016.2634530

Antona, M., & Stephanidis, C. (2020). Universal access in human-computer interaction: Applications and practice: 14th International Conference, UAHCI 2020, held as part of the 22nd HCI international conference, HCII 2020, Copenhagen, Denmark, July 19-24, 2020, proceedings. part II. 

Discover the origins of the headphone jack in 19th-century telecommunications, tracing its unexpected journey from switchboards to soundboards. This episode reveals how a simple, spring-loaded connector became the backbone of audio and communication tech for over a century. 

Scribner, C. (1884, February 5). TELEPHONE SWITCH. 

Oskay, W., Schlaepfer, E. (2022). Open Circuits. No Starch Press.

Springer. Chapuis, R. J., & Joel, A. E. (2003). 100 years of telephone switching (1878-1978). IOS Press : Ohmsha. 

Explore how the headphone jack's minimalist design enabled decades of cross-device compatibility and creative adaptation. From stereo sound to smart mic input, this episode highlights how tiny rings and clever engineering helped the jack evolve without reinventing the wheel. 

Oskay, W., Schlaepfer, E. (2022). Open Circuits. No Starch Press.

Davis, G., & Jones, R. (2000). The Sound Reinforcement Handbook. Hal Leonard Corporation.