One possible solution would be a physical plug that connects an implanted device to external equipment. But that would introduce more issues. The wound would have to remain open, increasing the risk of infection, while rigid materials could also damage surrounding tissue.

To address the challenge, scientists at the University of California, Irvine, have developed a soft, tissue-like port called the Implantable Bioelectronic Outlet, or IBO. It is essentially a hidden electrical socket beneath the skin. If doctors need to download high-speed data, recharge an implanted battery or deliver electrical stimulation, they can insert a tiny needle directly through the skin into the soft port.