In the next 10 to 20 years, the technology that allows us to use wireless headsets to chat on our cell phones could provide doctors with vital signs, according to a United Kingdom report. The report found that humans could one day have "in-body networks," a series of sensors implanted in a patient's body to let doctors monitor the body remotely. The report also predicted the creation of "on-body monitors," wearable devices that would send vital information via Bluetooth or Wi-Fi to a portable monitor such as a watch or a cell phone. The technologies are being researched in United Kingdom universities.