2016 Injectable computers can broadcast from inside the body, a variety of sensors that can fit inside the human body, made possible by several breakthroughs in ultra-low power computing.
THE INTERNET OF BIO-NANOTHINGS - 'A biological embedded computing device which gathers from and transmits information to the biological domain and also has an interface with the electrical domain of the internet.'
Computing Reliably with Molecular Walkers ~ Microsoft "DNA computing is emerging as a versatile technology that promises a vast range of applications, including biosensing, drug delivery and synthetic biology"